22649538 has 16 divisors (see below), whose sum is σ = 45845856. Its totient is φ = 7458720.

The previous prime is 22649509. The next prime is 22649563. The reversal of 22649538 is 83594622.

It is a happy number.

It is a super-2 number, since 2×22649538² = 1026003143226888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22649496 and 22649505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22243 + ... + 23238.

It is an arithmetic number, because the mean of its divisors is an integer number (2865366).

Almost surely, 2^22649538 is an apocalyptic number.

22649538 is an abundant number, since it is smaller than the sum of its proper divisors (23196318).

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

22649538 is a wasteful number, since it uses less digits than its factorization.

22649538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45569.

The product of its digits is 103680, while the sum is 39.

The square root of 22649538 is about 4759.1530759159. The cubic root of 22649538 is about 282.9348532967.

The spelling of 22649538 in words is "twenty-two million, six hundred forty-nine thousand, five hundred thirty-eight".