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30869136 = 24324632
BaseRepresentation
bin111010111000…
…0011010010000
32011002022111100
41311300122100
530400303021
63021344400
7523245324
oct165603220
964068440
1030869136
1116474491
12a408100
13651a77c
144157984
152a9b626
hex1d70690

30869136 has 45 divisors (see below), whose sum is σ = 86577699. Its totient is φ = 10267488.

The previous prime is 30869123. The next prime is 30869173. The reversal of 30869136 is 63196803.

It is a happy number.

The square root of 30869136 is 5556.

It is a perfect power (a square), and thus also a powerful number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 30869136.

It is an unprimeable number.

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 8 ways as a sum of consecutive naturals, for example, 66441 + ... + 66903.

Almost surely, 230869136 is an apocalyptic number.

30869136 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

30869136 is the 5556-th square number.

It is an amenable number.

30869136 is an abundant number, since it is smaller than the sum of its proper divisors (55708563).

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

30869136 is an equidigital number, since it uses as much as digits as its factorization.

30869136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940 (or 468 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The cubic root of 30869136 is about 313.6954056000.

Multiplying 30869136 by its sum of digits (36), we get a square (1111288896 = 333362).

30869136 divided by its sum of digits (36) gives a square (857476 = 9262).

The spelling of 30869136 in words is "thirty million, eight hundred sixty-nine thousand, one hundred thirty-six".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 36 48 72 144 463 926 1389 1852 2778 3704 4167 5556 7408 8334 11112 16668 22224 33336 66672 214369 428738 643107 857476 1286214 1714952 1929321 2572428 3429904 3858642 5144856 7717284 10289712 15434568 30869136