Search a number
-
+
385109120 = 2751124973
BaseRepresentation
bin10110111101000…
…100110010000000
3222211122120101202
4112331010302000
51242041442440
6102114120332
712354242054
oct2675046200
9884576352
10385109120
11188425200
12a8b800a8
1361a29826
1439209c64
1523c21615
hex16f44c80

385109120 has 96 divisors (see below), whose sum is σ = 1012159260. Its totient is φ = 140011520.

The previous prime is 385109113. The next prime is 385109147. The reversal of 385109120 is 21901583.

It can be written as a sum of positive squares in 2 ways, for example, as 385101376 + 7744 = 19624^2 + 88^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74954 + ... + 79926.

Almost surely, 2385109120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 385109120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (506079630).

385109120 is an abundant number, since it is smaller than the sum of its proper divisors (627050140).

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

385109120 is a wasteful number, since it uses less digits than its factorization.

385109120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5014 (or 4991 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 385109120 is about 19624.1973084251. The cubic root of 385109120 is about 727.5473577970.

The spelling of 385109120 in words is "three hundred eighty-five million, one hundred nine thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 11 16 20 22 32 40 44 55 64 80 88 110 121 128 160 176 220 242 320 352 440 484 605 640 704 880 968 1210 1408 1760 1936 2420 3520 3872 4840 4973 7040 7744 9680 9946 15488 19360 19892 24865 38720 39784 49730 54703 77440 79568 99460 109406 159136 198920 218812 273515 318272 397840 437624 547030 601733 636544 795680 875248 1094060 1203466 1591360 1750496 2188120 2406932 3008665 3182720 3500992 4376240 4813864 6017330 7001984 8752480 9627728 12034660 17504960 19255456 24069320 35009920 38510912 48138640 77021824 96277280 192554560 385109120