22712491 has 8 divisors (see below), whose sum is σ = 23500800. Its totient is φ = 21927720.

The previous prime is 22712489. The next prime is 22712497. The reversal of 22712491 is 19421722.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22712491 - 2¹ = 22712489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22712497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21780 + ... + 22798.

It is an arithmetic number, because the mean of its divisors is an integer number (2937600).

Almost surely, 2^22712491 is an apocalyptic number.

22712491 is a deficient number, since it is larger than the sum of its proper divisors (788309).

22712491 is a wasteful number, since it uses less digits than its factorization.

22712491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1769.

The product of its digits is 2016, while the sum is 28.

The square root of 22712491 is about 4765.7623734299. The cubic root of 22712491 is about 283.1967441599.

The spelling of 22712491 in words is "twenty-two million, seven hundred twelve thousand, four hundred ninety-one".