23207790 has 32 divisors (see below), whose sum is σ = 55917216. Its totient is φ = 6164480.

The previous prime is 23207773. The next prime is 23207791. The reversal of 23207790 is 9770232.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23207791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7054 + ... + 9806.

It is an arithmetic number, because the mean of its divisors is an integer number (1747413).

Almost surely, 2^23207790 is an apocalyptic number.

23207790 is an abundant number, since it is smaller than the sum of its proper divisors (32709426).

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

23207790 is a wasteful number, since it uses less digits than its factorization.

23207790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3044.

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

The square root of 23207790 is about 4817.4464190067. The cubic root of 23207790 is about 285.2405479141.

The spelling of 23207790 in words is "twenty-three million, two hundred seven thousand, seven hundred ninety".