23981532 has 24 divisors (see below), whose sum is σ = 56092176. Its totient is φ = 7974528.

The previous prime is 23981527. The next prime is 23981533. The reversal of 23981532 is 23518932.

It is a super-2 number, since 2×23981532² = 1150227754134048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23981493 and 23981502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23981533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3298 + ... + 7670.

It is an arithmetic number, because the mean of its divisors is an integer number (2337174).

Almost surely, 2^23981532 is an apocalyptic number.

It is an amenable number.

23981532 is an abundant number, since it is smaller than the sum of its proper divisors (32110644).

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

23981532 is a wasteful number, since it uses less digits than its factorization.

23981532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4837 (or 4835 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 23981532 is about 4897.0942404655. The cubic root of 23981532 is about 288.3759076726.

The spelling of 23981532 in words is "twenty-three million, nine hundred eighty-one thousand, five hundred thirty-two".