23402390 has 32 divisors (see below), whose sum is σ = 47083680. Its totient is φ = 8300800.

The previous prime is 23402383. The next prime is 23402411. The reversal of 23402390 is 9320432.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1916 + ... + 7104.

It is an arithmetic number, because the mean of its divisors is an integer number (1471365).

Almost surely, 2^23402390 is an apocalyptic number.

23402390 is an abundant number, since it is smaller than the sum of its proper divisors (23681290).

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

23402390 is a wasteful number, since it uses less digits than its factorization.

23402390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5248.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 23402390 is about 4837.6016785180. The cubic root of 23402390 is about 286.0355881839.

The spelling of 23402390 in words is "twenty-three million, four hundred two thousand, three hundred ninety".