22938390 has 40 divisors (see below), whose sum is σ = 61680960. Its totient is φ = 6116688.

The previous prime is 22938373. The next prime is 22938407. The reversal of 22938390 is 9383922.

It is an interprime number because it is at equal distance from previous prime (22938373) and next prime (22938407).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13350 + ... + 14969.

It is an arithmetic number, because the mean of its divisors is an integer number (1542024).

Almost surely, 2^22938390 is an apocalyptic number.

22938390 is an abundant number, since it is smaller than the sum of its proper divisors (38742570).

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

22938390 is a wasteful number, since it uses less digits than its factorization.

22938390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28338 (or 28329 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 22938390 is about 4789.4039295094. The cubic root of 22938390 is about 284.1325424443.

It can be divided in two parts, 2 and 2938390, that added together give a palindrome (2938392).

The spelling of 22938390 in words is "twenty-two million, nine hundred thirty-eight thousand, three hundred ninety".