22657642 has 16 divisors (see below), whose sum is σ = 40181760. Its totient is φ = 9375408.

The previous prime is 22657639. The next prime is 22657643. The reversal of 22657642 is 24675622.

It is a junction number, because it is equal to n+sod(n) for n = 22657598 and 22657607.

It is not an unprimeable number, because it can be changed into a prime (22657643) 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, 27498 + ... + 28309.

It is an arithmetic number, because the mean of its divisors is an integer number (2511360).

Almost surely, 2^22657642 is an apocalyptic number.

22657642 is a deficient number, since it is larger than the sum of its proper divisors (17524118).

22657642 is a wasteful number, since it uses less digits than its factorization.

22657642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55845.

The product of its digits is 40320, while the sum is 34.

The square root of 22657642 is about 4760.0044117627. The cubic root of 22657642 is about 282.9685939502.

The spelling of 22657642 in words is "twenty-two million, six hundred fifty-seven thousand, six hundred forty-two".