22500747 has 10 divisors (see below), whose sum is σ = 33612348. Its totient is φ = 15000444.

The previous prime is 22500727. The next prime is 22500757. The reversal of 22500747 is 74700522.

It is not a de Polignac number, because 22500747 - 2¹¹ = 22498699 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 22500747.

It is not an unprimeable number, because it can be changed into a prime (22500727) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 138813 + ... + 138974.

Almost surely, 2^22500747 is an apocalyptic number.

22500747 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

22500747 is a deficient number, since it is larger than the sum of its proper divisors (11111601).

22500747 is an equidigital number, since it uses as much as digits as its factorization.

22500747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277799 (or 277790 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 22500747 is about 4743.4952303128. The cubic root of 22500747 is about 282.3139328694.

The spelling of 22500747 in words is "twenty-two million, five hundred thousand, seven hundred forty-seven".