22538898 has 30 divisors (see below), whose sum is σ = 50639589. Its totient is φ = 7492824.

The previous prime is 22538869. The next prime is 22538917. The reversal of 22538898 is 89883522.

22538898 is a `hidden beast` number, since 22 + 538 + 8 + 98 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 22496049 + 42849 = 4743^2 + 207^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=3357.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 60240 + ... + 60612.

Almost surely, 2^22538898 is an apocalyptic number.

22538898 is an abundant number, since it is smaller than the sum of its proper divisors (28100691).

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

22538898 is an frugal number, since it uses more digits than its factorization.

22538898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760 (or 378 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 22538898 is about 4747.5149288865. The cubic root of 22538898 is about 282.4734013122.

It can be divided in two parts, 22538 and 898, that added together give a triangular number (23436 = T₂₁₆).

The spelling of 22538898 in words is "twenty-two million, five hundred thirty-eight thousand, eight hundred ninety-eight".