22712438 has 16 divisors (see below), whose sum is σ = 38997504. Its totient is φ = 9718440.

The previous prime is 22712419. The next prime is 22712441. The reversal of 22712438 is 83421722.

It is a self number, because there is not a number n which added to its sum of digits gives 22712438.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14531 + ... + 16017.

It is an arithmetic number, because the mean of its divisors is an integer number (2437344).

Almost surely, 2^22712438 is an apocalyptic number.

22712438 is a deficient number, since it is larger than the sum of its proper divisors (16285066).

22712438 is a wasteful number, since it uses less digits than its factorization.

22712438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2587.

The product of its digits is 5376, while the sum is 29.

The square root of 22712438 is about 4765.7568129312. The cubic root of 22712438 is about 283.1965238782.

The spelling of 22712438 in words is "twenty-two million, seven hundred twelve thousand, four hundred thirty-eight".