23437728 has 48 divisors (see below), whose sum is σ = 68362560. Its totient is φ = 7812288.

The previous prime is 23437699. The next prime is 23437751. The reversal of 23437728 is 82773432.

It is a tau number, because it is divible by the number of its divisors (48).

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 = 23437692 and 23437701.

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, 12700 + ... + 14427.

It is an arithmetic number, because the mean of its divisors is an integer number (1424220).

Almost surely, 2^23437728 is an apocalyptic number.

It is an amenable number.

23437728 is an abundant number, since it is smaller than the sum of its proper divisors (44924832).

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

23437728 is a wasteful number, since it uses less digits than its factorization.

23437728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27146 (or 27132 counting only the distinct ones).

The product of its digits is 56448, while the sum is 36.

The square root of 23437728 is about 4841.2527304407. The cubic root of 23437728 is about 286.1794886170.

The spelling of 23437728 in words is "twenty-three million, four hundred thirty-seven thousand, seven hundred twenty-eight".