22629881 has 2 divisors, whose sum is σ = 22629882. Its totient is φ = 22629880.

The previous prime is 22629877. The next prime is 22629899. The reversal of 22629881 is 18892622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13388281 + 9241600 = 3659^2 + 3040^2 .

It is a cyclic number.

It is not a de Polignac number, because 22629881 - 2² = 22629877 is a prime.

It is a super-2 number, since 2×22629881² = 1024223028148322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22629851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11314940 + 11314941.

It is an arithmetic number, because the mean of its divisors is an integer number (11314941).

Almost surely, 2^22629881 is an apocalyptic number.

It is an amenable number.

22629881 is a deficient number, since it is larger than the sum of its proper divisors (1).

22629881 is an equidigital number, since it uses as much as digits as its factorization.

22629881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 38.

The square root of 22629881 is about 4757.0874492698. The cubic root of 22629881 is about 282.8529787771.

The spelling of 22629881 in words is "twenty-two million, six hundred twenty-nine thousand, eight hundred eighty-one".