22158044 has 12 divisors (see below), whose sum is σ = 38921568. Its totient is φ = 11037600.

The previous prime is 22158043. The next prime is 22158077. The reversal of 22158044 is 44085122.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22158041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9137 + ... + 11304.

It is an arithmetic number, because the mean of its divisors is an integer number (3243464).

Almost surely, 2^22158044 is an apocalyptic number.

It is an amenable number.

22158044 is a deficient number, since it is larger than the sum of its proper divisors (16763524).

22158044 is a wasteful number, since it uses less digits than its factorization.

22158044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20716 (or 20714 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 22158044 is about 4707.2331575991. The cubic root of 22158044 is about 280.8733107557.

The spelling of 22158044 in words is "twenty-two million, one hundred fifty-eight thousand, forty-four".