Search a number
-
+
379490400 = 25335217569
BaseRepresentation
bin10110100111101…
…001000001100000
3222110002002222000
4112213221001200
51234122143100
6101353444000
712255421002
oct2647510140
9873062860
10379490400
11185237833
12a7110600
1360810243
1438586372
15234b1900
hex169e9060

379490400 has 144 divisors (see below), whose sum is σ = 1372568400. Its totient is φ = 101191680.

The previous prime is 379490387. The next prime is 379490407. The reversal of 379490400 is 4094973.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (379490407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12816 + ... + 30384.

It is an arithmetic number, because the mean of its divisors is an integer number (9531725).

Almost surely, 2379490400 is an apocalyptic number.

379490400 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 379490400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (686284200).

379490400 is an abundant number, since it is smaller than the sum of its proper divisors (993078000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

379490400 is a wasteful number, since it uses less digits than its factorization.

379490400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17598 (or 17579 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 379490400 is about 19480.5133402588. The cubic root of 379490400 is about 723.9917176998.

The spelling of 379490400 in words is "three hundred seventy-nine million, four hundred ninety thousand, four hundred".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 25 27 30 32 36 40 45 48 50 54 60 72 75 80 90 96 100 108 120 135 144 150 160 180 200 216 225 240 270 288 300 360 400 432 450 480 540 600 675 720 800 864 900 1080 1200 1350 1440 1800 2160 2400 2700 3600 4320 5400 7200 10800 17569 21600 35138 52707 70276 87845 105414 140552 158121 175690 210828 263535 281104 316242 351380 421656 439225 474363 527070 562208 632484 702760 790605 843312 878450 948726 1054140 1264968 1317675 1405520 1581210 1686624 1756900 1897452 2108280 2371815 2529936 2635350 2811040 3162420 3513800 3794904 3953025 4216560 4743630 5059872 5270700 6324840 7027600 7589808 7906050 8433120 9487260 10541400 11859075 12649680 14055200 15179616 15812100 18974520 21082800 23718150 25299360 31624200 37949040 42165600 47436300 63248400 75898080 94872600 126496800 189745200 379490400