22938840 has 48 divisors (see below), whose sum is σ = 74552400. Its totient is φ = 6116928.

The previous prime is 22938829. The next prime is 22938841. The reversal of 22938840 is 4883922.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 22938795 and 22938804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22938841) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 31500 + ... + 32219.

It is an arithmetic number, because the mean of its divisors is an integer number (1553175).

Almost surely, 2^22938840 is an apocalyptic number.

22938840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22938840 is an abundant number, since it is smaller than the sum of its proper divisors (51613560).

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

22938840 is a wasteful number, since it uses less digits than its factorization.

22938840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63736 (or 63729 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 22938840 is about 4789.4509079852. The cubic root of 22938840 is about 284.1344004475.

The spelling of 22938840 in words is "twenty-two million, nine hundred thirty-eight thousand, eight hundred forty".