22978198 has 16 divisors (see below), whose sum is σ = 35108640. Its totient is φ = 11277376.

The previous prime is 22978187. The next prime is 22978217. The reversal of 22978198 is 89187922.

It is a congruent number.

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, 29340 + ... + 30112.

It is an arithmetic number, because the mean of its divisors is an integer number (2194290).

Almost surely, 2^22978198 is an apocalyptic number.

22978198 is a deficient number, since it is larger than the sum of its proper divisors (12130442).

22978198 is a wasteful number, since it uses less digits than its factorization.

22978198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031.

The product of its digits is 145152, while the sum is 46.

The square root of 22978198 is about 4793.5579687743. The cubic root of 22978198 is about 284.2968116242.

The spelling of 22978198 in words is "twenty-two million, nine hundred seventy-eight thousand, one hundred ninety-eight".