23442390 has 48 divisors (see below), whose sum is σ = 64162800. Its totient is φ = 5921856.

The previous prime is 23442379. The next prime is 23442401. The reversal of 23442390 is 9324432.

It is a happy number.

23442390 is a `hidden beast` number, since 234 + 42 + 390 = 666.

It is an interprime number because it is at equal distance from previous prime (23442379) and next prime (23442401).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5145 + ... + 8564.

It is an arithmetic number, because the mean of its divisors is an integer number (1336725).

Almost surely, 2^23442390 is an apocalyptic number.

23442390 is an abundant number, since it is smaller than the sum of its proper divisors (40720410).

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

23442390 is a wasteful number, since it uses less digits than its factorization.

23442390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13741 (or 13738 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 23442390 is about 4841.7341934476. The cubic root of 23442390 is about 286.1984620193.

It can be divided in two parts, 23442 and 390, that added together give a palindrome (23832).

The spelling of 23442390 in words is "twenty-three million, four hundred forty-two thousand, three hundred ninety".