23287128 has 16 divisors (see below), whose sum is σ = 58217880. Its totient is φ = 7762368.

The previous prime is 23287111. The next prime is 23287129. The reversal of 23287128 is 82178232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23287129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 485125 + ... + 485172.

Almost surely, 2^23287128 is an apocalyptic number.

It is an amenable number.

23287128 is an abundant number, since it is smaller than the sum of its proper divisors (34930752).

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

23287128 is a wasteful number, since it uses less digits than its factorization.

23287128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970306 (or 970302 counting only the distinct ones).

The product of its digits is 10752, while the sum is 33.

The square root of 23287128 is about 4825.6738389576. The cubic root of 23287128 is about 285.5652187163.

The spelling of 23287128 in words is "twenty-three million, two hundred eighty-seven thousand, one hundred twenty-eight".