22452881 has 12 divisors (see below), whose sum is σ = 24947076. Its totient is φ = 20190720.

The previous prime is 22452877. The next prime is 22452901. The reversal of 22452881 is 18825422.

It can be written as a sum of positive squares in 2 ways, for example, as 15249025 + 7203856 = 3905^2 + 2684^2 .

It is not a de Polignac number, because 22452881 - 2² = 22452877 is a prime.

It is a super-2 number, since 2×22452881² = 1008263730400322, which contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (22452481) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10781 + ... + 12693.

It is an arithmetic number, because the mean of its divisors is an integer number (2078923).

Almost surely, 2^22452881 is an apocalyptic number.

It is an amenable number.

22452881 is a deficient number, since it is larger than the sum of its proper divisors (2494195).

22452881 is a wasteful number, since it uses less digits than its factorization.

22452881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2032 (or 2021 counting only the distinct ones).

The product of its digits is 10240, while the sum is 32.

The square root of 22452881 is about 4738.4471084945. The cubic root of 22452881 is about 282.1136012637.

The spelling of 22452881 in words is "twenty-two million, four hundred fifty-two thousand, eight hundred eighty-one".