23720970 has 64 divisors (see below), whose sum is σ = 70076160. Its totient is φ = 5004288.

The previous prime is 23720941. The next prime is 23721007. The reversal of 23720970 is 7902732.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1615 + ... + 7074.

It is an arithmetic number, because the mean of its divisors is an integer number (1094940).

Almost surely, 2^23720970 is an apocalyptic number.

23720970 is an abundant number, since it is smaller than the sum of its proper divisors (46355190).

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

23720970 is a wasteful number, since it uses less digits than its factorization.

23720970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8719.

The product of its (nonzero) digits is 5292, while the sum is 30.

The square root of 23720970 is about 4870.4178465507. The cubic root of 23720970 is about 287.3276900693.

The spelling of 23720970 in words is "twenty-three million, seven hundred twenty thousand, nine hundred seventy".