22138475 has 12 divisors (see below), whose sum is σ = 27863544. Its totient is φ = 17445120.

The previous prime is 22138429. The next prime is 22138481. The reversal of 22138475 is 57483122.

It is not a de Polignac number, because 22138475 - 2⁶ = 22138411 is a prime.

It is a super-2 number, since 2×22138475² = 980224150651250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4934 + ... + 8283.

It is an arithmetic number, because the mean of its divisors is an integer number (2321962).

Almost surely, 2^22138475 is an apocalyptic number.

22138475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22138475 is a deficient number, since it is larger than the sum of its proper divisors (5725069).

22138475 is a wasteful number, since it uses less digits than its factorization.

22138475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13294 (or 13289 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 22138475 is about 4705.1540888689. The cubic root of 22138475 is about 280.7906014595.

The spelling of 22138475 in words is "twenty-two million, one hundred thirty-eight thousand, four hundred seventy-five".