22138893 has 32 divisors (see below), whose sum is σ = 38411520. Its totient is φ = 12337920.

The previous prime is 22138889. The next prime is 22138931. The reversal of 22138893 is 39883122.

It is a happy number.

It is not a de Polignac number, because 22138893 - 2² = 22138889 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22138813) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6321 + ... + 9177.

It is an arithmetic number, because the mean of its divisors is an integer number (1200360).

Almost surely, 2^22138893 is an apocalyptic number.

It is an amenable number.

22138893 is a deficient number, since it is larger than the sum of its proper divisors (16272627).

22138893 is a wasteful number, since it uses less digits than its factorization.

22138893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2914 (or 2908 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 22138893 is about 4705.1985080334. The cubic root of 22138893 is about 280.7923686654.

The spelling of 22138893 in words is "twenty-two million, one hundred thirty-eight thousand, eight hundred ninety-three".