23102172 has 60 divisors (see below), whose sum is σ = 61024656. Its totient is φ = 7620480.

The previous prime is 23102141. The next prime is 23102213. The reversal of 23102172 is 27120132.

It is a super-2 number, since 2×23102172² = 1067420702235168, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 36297 + ... + 36927.

Almost surely, 2^23102172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23102172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30512328).

23102172 is an abundant number, since it is smaller than the sum of its proper divisors (37922484).

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

23102172 is a wasteful number, since it uses less digits than its factorization.

23102172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760 (or 749 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 23102172 is about 4806.4718869458. The cubic root of 23102172 is about 284.8071825978.

The spelling of 23102172 in words is "twenty-three million, one hundred two thousand, one hundred seventy-two".