23399790 has 16 divisors (see below), whose sum is σ = 56159568. Its totient is φ = 6239936.

The previous prime is 23399777. The next prime is 23399797. The reversal of 23399790 is 9799332.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23399797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 389967 + ... + 390026.

It is an arithmetic number, because the mean of its divisors is an integer number (3509973).

Almost surely, 2^23399790 is an apocalyptic number.

23399790 is an abundant number, since it is smaller than the sum of its proper divisors (32759778).

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

23399790 is a wasteful number, since it uses less digits than its factorization.

23399790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780003.

The product of its (nonzero) digits is 91854, while the sum is 42.

The square root of 23399790 is about 4837.3329428519. The cubic root of 23399790 is about 286.0249949629.

The spelling of 23399790 in words is "twenty-three million, three hundred ninety-nine thousand, seven hundred ninety".