22130878 has 32 divisors (see below), whose sum is σ = 41741568. Its totient is φ = 8548800.

The previous prime is 22130863. The next prime is 22130879. The reversal of 22130878 is 87803122.

It is a super-2 number, since 2×22130878² = 979551522101768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22130879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19626 + ... + 20722.

It is an arithmetic number, because the mean of its divisors is an integer number (1304424).

Almost surely, 2^22130878 is an apocalyptic number.

22130878 is a deficient number, since it is larger than the sum of its proper divisors (19610690).

22130878 is a wasteful number, since it uses less digits than its factorization.

22130878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1248.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 22130878 is about 4704.3467134130. The cubic root of 22130878 is about 280.7584792492.

The spelling of 22130878 in words is "twenty-two million, one hundred thirty thousand, eight hundred seventy-eight".