22650638 has 4 divisors (see below), whose sum is σ = 33975960. Its totient is φ = 11325318.

The previous prime is 22650599. The next prime is 22650671. The reversal of 22650638 is 83605622.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83605622 = 2 ⋅41802811.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5662658 + ... + 5662661.

It is an arithmetic number, because the mean of its divisors is an integer number (8493990).

Almost surely, 2^22650638 is an apocalyptic number.

22650638 is a deficient number, since it is larger than the sum of its proper divisors (11325322).

22650638 is a wasteful number, since it uses less digits than its factorization.

22650638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11325321.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 22650638 is about 4759.2686412935. The cubic root of 22650638 is about 282.9394335712.

The spelling of 22650638 in words is "twenty-two million, six hundred fifty thousand, six hundred thirty-eight".