22486921 has 4 divisors (see below), whose sum is σ = 22522644. Its totient is φ = 22451200.

The previous prime is 22486913. The next prime is 22486927. The reversal of 22486921 is 12968422.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19891600 + 2595321 = 4460^2 + 1611^2 .

It is a cyclic number.

It is not a de Polignac number, because 22486921 - 2³ = 22486913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22486927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16900 + ... + 18181.

It is an arithmetic number, because the mean of its divisors is an integer number (5630661).

Almost surely, 2^22486921 is an apocalyptic number.

It is an amenable number.

22486921 is a deficient number, since it is larger than the sum of its proper divisors (35723).

22486921 is an equidigital number, since it uses as much as digits as its factorization.

22486921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35722.

The product of its digits is 13824, while the sum is 34.

The square root of 22486921 is about 4742.0376421956. The cubic root of 22486921 is about 282.2560966830.

The spelling of 22486921 in words is "twenty-two million, four hundred eighty-six thousand, nine hundred twenty-one".