22427538 has 16 divisors (see below), whose sum is σ = 51263040. Its totient is φ = 6407856.

The previous prime is 22427519. The next prime is 22427549. The reversal of 22427538 is 83572422.

It is a junction number, because it is equal to n+sod(n) for n = 22427499 and 22427508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266953 + ... + 267036.

It is an arithmetic number, because the mean of its divisors is an integer number (3203940).

Almost surely, 2^22427538 is an apocalyptic number.

22427538 is an abundant number, since it is smaller than the sum of its proper divisors (28835502).

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

22427538 is a wasteful number, since it uses less digits than its factorization.

22427538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534001.

The product of its digits is 26880, while the sum is 33.

The square root of 22427538 is about 4735.7721651279. The cubic root of 22427538 is about 282.0074189487.

The spelling of 22427538 in words is "twenty-two million, four hundred twenty-seven thousand, five hundred thirty-eight".