23537228 has 24 divisors (see below), whose sum is σ = 48392400. Its totient is φ = 9875520.

The previous prime is 23537221. The next prime is 23537237. The reversal of 23537228 is 82273532.

It is a super-2 number, since 2×23537228² = 1108002203847968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23537194 and 23537203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23537221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20003 + ... + 21146.

It is an arithmetic number, because the mean of its divisors is an integer number (2016350).

Almost surely, 2^23537228 is an apocalyptic number.

It is an amenable number.

23537228 is an abundant number, since it is smaller than the sum of its proper divisors (24855172).

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

23537228 is a wasteful number, since it uses less digits than its factorization.

23537228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41177 (or 41175 counting only the distinct ones).

The product of its digits is 20160, while the sum is 32.

The square root of 23537228 is about 4851.5181129209. The cubic root of 23537228 is about 286.5838887248.

The spelling of 23537228 in words is "twenty-three million, five hundred thirty-seven thousand, two hundred twenty-eight".