23185128 has 32 divisors (see below), whose sum is σ = 58080960. Its totient is φ = 7712640.

The previous prime is 23185109. The next prime is 23185133. The reversal of 23185128 is 82158132.

It is a junction number, because it is equal to n+sod(n) for n = 23185095 and 23185104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21973 + ... + 23003.

It is an arithmetic number, because the mean of its divisors is an integer number (1815030).

Almost surely, 2^23185128 is an apocalyptic number.

It is an amenable number.

23185128 is an abundant number, since it is smaller than the sum of its proper divisors (34895832).

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

23185128 is a wasteful number, since it uses less digits than its factorization.

23185128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1977 (or 1973 counting only the distinct ones).

The product of its digits is 3840, while the sum is 30.

The square root of 23185128 is about 4815.0937685574. The cubic root of 23185128 is about 285.1476735463.

The spelling of 23185128 in words is "twenty-three million, one hundred eighty-five thousand, one hundred twenty-eight".