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23905252 = 227853759
BaseRepresentation
bin101101100110…
…0001111100100
31122222111211201
41123030033210
522104432002
62212212244
7410122420
oct133141744
948874751
1023905252
1112548408
12800a084
134c4cb27
143263b80
152173087
hex16cc3e4

23905252 has 12 divisors (see below), whose sum is σ = 47810560. Its totient is φ = 10245096.

The previous prime is 23905243. The next prime is 23905253. The reversal of 23905252 is 25250932.

23905252 is an admirable number.

It is a super-2 number, since 2×239052522 = 1142922146367008, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 853759 = 23905252 / (2 + 3 + 9 + 0 + 5 + 2 + 5 + 2).

It is a self number, because there is not a number n which added to its sum of digits gives 23905252.

It is not an unprimeable number, because it can be changed into a prime (23905253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 426852 + ... + 426907.

Almost surely, 223905252 is an apocalyptic number.

It is an amenable number.

23905252 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

23905252 is a wasteful number, since it uses less digits than its factorization.

23905252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853770 (or 853768 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 23905252 is about 4889.2997453623. The cubic root of 23905252 is about 288.0698293896.

The spelling of 23905252 in words is "twenty-three million, nine hundred five thousand, two hundred fifty-two".

Divisors: 1 2 4 7 14 28 853759 1707518 3415036 5976313 11952626 23905252