23752728 has 24 divisors (see below), whose sum is σ = 64330500. Its totient is φ = 7917552.

The previous prime is 23752709. The next prime is 23752739. The reversal of 23752728 is 82725732.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 23752692 and 23752701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 164878 + ... + 165021.

Almost surely, 2^23752728 is an apocalyptic number.

It is an amenable number.

23752728 is an abundant number, since it is smaller than the sum of its proper divisors (40577772).

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

23752728 is a wasteful number, since it uses less digits than its factorization.

23752728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329911 (or 329904 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 23752728 is about 4873.6770512622. The cubic root of 23752728 is about 287.4558591338.

The spelling of 23752728 in words is "twenty-three million, seven hundred fifty-two thousand, seven hundred twenty-eight".