22138260 has 48 divisors (see below), whose sum is σ = 62284992. Its totient is φ = 5875200.

The previous prime is 22138243. The next prime is 22138279. The reversal of 22138260 is 6283122.

It is a self number, because there is not a number n which added to its sum of digits gives 22138260.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13695 + ... + 15225.

It is an arithmetic number, because the mean of its divisors is an integer number (1297604).

Almost surely, 2^22138260 is an apocalyptic number.

22138260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22138260 is an abundant number, since it is smaller than the sum of its proper divisors (40146732).

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

22138260 is a wasteful number, since it uses less digits than its factorization.

22138260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1784 (or 1782 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 22138260 is about 4705.1312415277. The cubic root of 22138260 is about 280.7896924813.

The spelling of 22138260 in words is "twenty-two million, one hundred thirty-eight thousand, two hundred sixty".