22487142 has 32 divisors (see below), whose sum is σ = 46166400. Its totient is φ = 7299648.

The previous prime is 22487131. The next prime is 22487161. The reversal of 22487142 is 24178422.

It is a congruent number.

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 in 15 ways as a sum of consecutive naturals, for example, 48978 + ... + 49434.

It is an arithmetic number, because the mean of its divisors is an integer number (1442700).

Almost surely, 2^22487142 is an apocalyptic number.

22487142 is an abundant number, since it is smaller than the sum of its proper divisors (23679258).

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

22487142 is a wasteful number, since it uses less digits than its factorization.

22487142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660.

The product of its digits is 7168, while the sum is 30.

The square root of 22487142 is about 4742.0609443574. The cubic root of 22487142 is about 282.2570213449.

The spelling of 22487142 in words is "twenty-two million, four hundred eighty-seven thousand, one hundred forty-two".