22139898 has 16 divisors (see below), whose sum is σ = 48305376. Its totient is φ = 6709040.

The previous prime is 22139891. The next prime is 22139911. The reversal of 22139898 is 89893122.

It is not an unprimeable number, because it can be changed into a prime (22139891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167661 + ... + 167792.

It is an arithmetic number, because the mean of its divisors is an integer number (3019086).

Almost surely, 2^22139898 is an apocalyptic number.

22139898 is an abundant number, since it is smaller than the sum of its proper divisors (26165478).

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

22139898 is a wasteful number, since it uses less digits than its factorization.

22139898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335469.

The product of its digits is 62208, while the sum is 42.

The square root of 22139898 is about 4705.3053035908. The cubic root of 22139898 is about 280.7966174786.

The spelling of 22139898 in words is "twenty-two million, one hundred thirty-nine thousand, eight hundred ninety-eight".