23136870 has 32 divisors (see below), whose sum is σ = 58452480. Its totient is φ = 5844960.

The previous prime is 23136857. The next prime is 23136887. The reversal of 23136870 is 7863132.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19726 + ... + 20865.

It is an arithmetic number, because the mean of its divisors is an integer number (1826640).

Almost surely, 2^23136870 is an apocalyptic number.

23136870 is an abundant number, since it is smaller than the sum of its proper divisors (35315610).

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

23136870 is a wasteful number, since it uses less digits than its factorization.

23136870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40620.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 23136870 is about 4810.0800409141. The cubic root of 23136870 is about 284.9496987249.

The spelling of 23136870 in words is "twenty-three million, one hundred thirty-six thousand, eight hundred seventy".