22072158 has 24 divisors (see below), whose sum is σ = 48936888. Its totient is φ = 7186032.

The previous prime is 22072139. The next prime is 22072163. The reversal of 22072158 is 85127022.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 13485 + ... + 15032.

It is an arithmetic number, because the mean of its divisors is an integer number (2039037).

Almost surely, 2^22072158 is an apocalyptic number.

22072158 is an abundant number, since it is smaller than the sum of its proper divisors (26864730).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22072158 is a wasteful number, since it uses less digits than its factorization.

22072158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28568 (or 28565 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 22072158 is about 4698.1015314699. The cubic root of 22072158 is about 280.5099465526.

The spelling of 22072158 in words is "twenty-two million, seventy-two thousand, one hundred fifty-eight".