22991060 has 24 divisors (see below), whose sum is σ = 49587720. Its totient is φ = 8947584.

The previous prime is 22991051. The next prime is 22991063. The reversal of 22991060 is 6019922.

It can be written as a sum of positive squares in 4 ways, for example, as 6959044 + 16032016 = 2638^2 + 4004^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22991063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14795 + ... + 16274.

It is an arithmetic number, because the mean of its divisors is an integer number (2066155).

Almost surely, 2^22991060 is an apocalyptic number.

22991060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22991060 is an abundant number, since it is smaller than the sum of its proper divisors (26596660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22991060 is a wasteful number, since it uses less digits than its factorization.

22991060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31115 (or 31113 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 22991060 is about 4794.8993732924. The cubic root of 22991060 is about 284.3498465857.

The spelling of 22991060 in words is "twenty-two million, nine hundred ninety-one thousand, sixty".