23428772 has 6 divisors (see below), whose sum is σ = 41000358. Its totient is φ = 11714384.

The previous prime is 23428751. The next prime is 23428799. The reversal of 23428772 is 27782432.

It can be written as a sum of positive squares in only one way, i.e., 15555136 + 7873636 = 3944^2 + 2806^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2928593 + ... + 2928600.

It is an arithmetic number, because the mean of its divisors is an integer number (6833393).

Almost surely, 2^23428772 is an apocalyptic number.

It is an amenable number.

23428772 is a deficient number, since it is larger than the sum of its proper divisors (17571586).

23428772 is a wasteful number, since it uses less digits than its factorization.

23428772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5857197 (or 5857195 counting only the distinct ones).

The product of its digits is 37632, while the sum is 35.

The square root of 23428772 is about 4840.3276748584. The cubic root of 23428772 is about 286.1430324379.

The spelling of 23428772 in words is "twenty-three million, four hundred twenty-eight thousand, seven hundred seventy-two".