22501506 has 32 divisors (see below), whose sum is σ = 49299840. Its totient is φ = 6814976.

The previous prime is 22501463. The next prime is 22501511. The reversal of 22501506 is 60510522.

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, 846 + ... + 6761.

It is an arithmetic number, because the mean of its divisors is an integer number (1540620).

Almost surely, 2^22501506 is an apocalyptic number.

22501506 is an abundant number, since it is smaller than the sum of its proper divisors (26798334).

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

22501506 is a wasteful number, since it uses less digits than its factorization.

22501506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7658.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 22501506 is about 4743.5752339348. The cubic root of 22501506 is about 282.3171071916.

The spelling of 22501506 in words is "twenty-two million, five hundred one thousand, five hundred six".