22118456 has 16 divisors (see below), whose sum is σ = 43275600. Its totient is φ = 10578304.

The previous prime is 22118449. The next prime is 22118461. The reversal of 22118456 is 65481122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59921 + ... + 60288.

It is an arithmetic number, because the mean of its divisors is an integer number (2704725).

Almost surely, 2^22118456 is an apocalyptic number.

It is an amenable number.

22118456 is a deficient number, since it is larger than the sum of its proper divisors (21157144).

22118456 is a wasteful number, since it uses less digits than its factorization.

22118456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120238 (or 120234 counting only the distinct ones).

The product of its digits is 3840, while the sum is 29.

The square root of 22118456 is about 4703.0262597608. The cubic root of 22118456 is about 280.7059397678.

Adding to 22118456 its reverse (65481122), we get a palindrome (87599578).

The spelling of 22118456 in words is "twenty-two million, one hundred eighteen thousand, four hundred fifty-six".