22158898 has 4 divisors (see below), whose sum is σ = 33238350. Its totient is φ = 11079448.

The previous prime is 22158881. The next prime is 22158907. The reversal of 22158898 is 89885122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 21372129 + 786769 = 4623^2 + 887^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5539723 + ... + 5539726.

Almost surely, 2^22158898 is an apocalyptic number.

22158898 is a deficient number, since it is larger than the sum of its proper divisors (11079452).

22158898 is a wasteful number, since it uses less digits than its factorization.

22158898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11079451.

The product of its digits is 92160, while the sum is 43.

The square root of 22158898 is about 4707.3238681867. The cubic root of 22158898 is about 280.8769191176.

The spelling of 22158898 in words is "twenty-two million, one hundred fifty-eight thousand, eight hundred ninety-eight".