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30949792 = 251756893
BaseRepresentation
bin111011000010…
…0000110100000
32011020102010121
41312010012200
530410343132
63023210024
7524032426
oct166040640
964212117
1030949792
111651a045
12a446914
1365483b3
144179116
152ab5497
hex1d841a0

30949792 has 24 divisors (see below), whose sum is σ = 64517796. Its totient is φ = 14564352.

The previous prime is 30949781. The next prime is 30949859. The reversal of 30949792 is 29794903.

It can be written as a sum of positive squares in 2 ways, for example, as 30869136 + 80656 = 5556^2 + 284^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27903 + ... + 28990.

Almost surely, 230949792 is an apocalyptic number.

30949792 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

30949792 is an abundant number, since it is smaller than the sum of its proper divisors (33568004).

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

30949792 is a wasteful number, since it uses less digits than its factorization.

30949792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56920 (or 56912 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 30949792 is about 5563.2537242157. The cubic root of 30949792 is about 313.9683795765.

The spelling of 30949792 in words is "thirty million, nine hundred forty-nine thousand, seven hundred ninety-two".

Divisors: 1 2 4 8 16 17 32 34 68 136 272 544 56893 113786 227572 455144 910288 967181 1820576 1934362 3868724 7737448 15474896 30949792