23561328 has 40 divisors (see below), whose sum is σ = 69563008. Its totient is φ = 6731712.

The previous prime is 23561327. The next prime is 23561357. The reversal of 23561328 is 82316532.

It is a junction number, because it is equal to n+sod(n) for n = 23561295 and 23561304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23561323) 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 7 ways as a sum of consecutive naturals, for example, 34726 + ... + 35397.

Almost surely, 2^23561328 is an apocalyptic number.

23561328 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

23561328 is an abundant number, since it is smaller than the sum of its proper divisors (46001680).

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

23561328 is a wasteful number, since it uses less digits than its factorization.

23561328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70141 (or 70135 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 23561328 is about 4854.0012360938. The cubic root of 23561328 is about 286.6816673840.

It can be divided in two parts, 235613 and 28, that added together give a triangular number (235641 = T₆₈₆).

The spelling of 23561328 in words is "twenty-three million, five hundred sixty-one thousand, three hundred twenty-eight".