22506530 has 16 divisors (see below), whose sum is σ = 40906944. Its totient is φ = 8914800.

The previous prime is 22506511. The next prime is 22506541. The reversal of 22506530 is 3560522.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22506496 and 22506505.

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, 9896 + ... + 11955.

It is an arithmetic number, because the mean of its divisors is an integer number (2556684).

Almost surely, 2^22506530 is an apocalyptic number.

22506530 is a deficient number, since it is larger than the sum of its proper divisors (18400414).

22506530 is a wasteful number, since it uses less digits than its factorization.

22506530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21961.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 22506530 is about 4744.1047627556. The cubic root of 22506530 is about 282.3381169794.

The spelling of 22506530 in words is "twenty-two million, five hundred six thousand, five hundred thirty".