Search a number
-
+
30468400 = 2452192211
BaseRepresentation
bin111010000111…
…0100100110000
32010022221210021
41310032210300
530244442100
63005013224
7516656104
oct164164460
963287707
1030468400
11162203a6
12a254214
13640a251
144091904
152a1ca1a
hex1d0e930

30468400 has 90 divisors (see below), whose sum is σ = 77621892. Its totient is φ = 11491200.

The previous prime is 30468397. The next prime is 30468401. The reversal of 30468400 is 486403.

30468400 is nontrivially palindromic in base 14.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (30468401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 144295 + ... + 144505.

Almost surely, 230468400 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 30468400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38810946).

30468400 is an abundant number, since it is smaller than the sum of its proper divisors (47153492).

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

30468400 is a wasteful number, since it uses less digits than its factorization.

30468400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267 (or 237 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 30468400 is about 5519.8188376069. The cubic root of 30468400 is about 312.3320484181.

It can be divided in two parts, 304 and 68400, that multiplied together give a square (20793600 = 45602).

The spelling of 30468400 in words is "thirty million, four hundred sixty-eight thousand, four hundred".

Divisors: 1 2 4 5 8 10 16 19 20 25 38 40 50 76 80 95 100 152 190 200 211 304 361 380 400 422 475 722 760 844 950 1055 1444 1520 1688 1805 1900 2110 2888 3376 3610 3800 4009 4220 5275 5776 7220 7600 8018 8440 9025 10550 14440 16036 16880 18050 20045 21100 28880 32072 36100 40090 42200 64144 72200 76171 80180 84400 100225 144400 152342 160360 200450 304684 320720 380855 400900 609368 761710 801800 1218736 1523420 1603600 1904275 3046840 3808550 6093680 7617100 15234200 30468400