23155432 has 16 divisors (see below), whose sum is σ = 43488900. Its totient is φ = 11558400.

The previous prime is 23155373. The next prime is 23155463. The reversal of 23155432 is 23455132.

It can be written as a sum of positive squares in 2 ways, for example, as 21958596 + 1196836 = 4686^2 + 1094^2 .

It is a super-2 number, since 2×23155432² = 1072348062213248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23155397 and 23155406.

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 3 ways as a sum of consecutive naturals, for example, 3544 + ... + 7672.

Almost surely, 2^23155432 is an apocalyptic number.

It is an amenable number.

23155432 is a deficient number, since it is larger than the sum of its proper divisors (20333468).

23155432 is a wasteful number, since it uses less digits than its factorization.

23155432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4836 (or 4832 counting only the distinct ones).

The product of its digits is 3600, while the sum is 25.

The square root of 23155432 is about 4812.0091437985. The cubic root of 23155432 is about 285.0258804855.

The spelling of 23155432 in words is "twenty-three million, one hundred fifty-five thousand, four hundred thirty-two".