23228028 has 36 divisors (see below), whose sum is σ = 59117968. Its totient is φ = 7689600.

The previous prime is 23228027. The next prime is 23228033. The reversal of 23228028 is 82082232.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 23227992 and 23228010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23228027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3300 + ... + 7572.

Almost surely, 2^23228028 is an apocalyptic number.

It is an amenable number.

23228028 is an abundant number, since it is smaller than the sum of its proper divisors (35889940).

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

23228028 is a wasteful number, since it uses less digits than its factorization.

23228028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4434 (or 4429 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 23228028 is about 4819.5464516902. The cubic root of 23228028 is about 285.3234370506.

The spelling of 23228028 in words is "twenty-three million, two hundred twenty-eight thousand, twenty-eight".