22501689 has 24 divisors (see below), whose sum is σ = 34967232. Its totient is φ = 12607200.

The previous prime is 22501679. The next prime is 22501697. The reversal of 22501689 is 98610522.

It is not a de Polignac number, because 22501689 - 2⁵ = 22501657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22501639) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 218412 + ... + 218514.

It is an arithmetic number, because the mean of its divisors is an integer number (1456968).

Almost surely, 2^22501689 is an apocalyptic number.

It is an amenable number.

22501689 is a deficient number, since it is larger than the sum of its proper divisors (12465543).

22501689 is a wasteful number, since it uses less digits than its factorization.

22501689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 22501689 is about 4743.5945231438. The cubic root of 22501689 is about 282.3178725313.

The spelling of 22501689 in words is "twenty-two million, five hundred one thousand, six hundred eighty-nine".