22138258 has 16 divisors (see below), whose sum is σ = 33830496. Its totient is φ = 10863360.

The previous prime is 22138243. The next prime is 22138279. The reversal of 22138258 is 85283122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31693 + ... + 32383.

It is an arithmetic number, because the mean of its divisors is an integer number (2114406).

Almost surely, 2^22138258 is an apocalyptic number.

22138258 is a deficient number, since it is larger than the sum of its proper divisors (11692238).

22138258 is a wasteful number, since it uses less digits than its factorization.

22138258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969.

The product of its digits is 7680, while the sum is 31.

The square root of 22138258 is about 4705.1310289938. The cubic root of 22138258 is about 280.7896840256.

The spelling of 22138258 in words is "twenty-two million, one hundred thirty-eight thousand, two hundred fifty-eight".