22961385 has 12 divisors (see below), whose sum is σ = 39799812. Its totient is φ = 12246048.

The previous prime is 22961381. The next prime is 22961387. The reversal of 22961385 is 58316922.

It can be written as a sum of positive squares in 2 ways, for example, as 15492096 + 7469289 = 3936^2 + 2733^2 .

It is not a de Polignac number, because 22961385 - 2² = 22961381 is a prime.

It is a super-2 number, since 2×22961385² = 1054450402236450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22961381) 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, 255082 + ... + 255171.

It is an arithmetic number, because the mean of its divisors is an integer number (3316651).

Almost surely, 2^22961385 is an apocalyptic number.

It is an amenable number.

22961385 is a deficient number, since it is larger than the sum of its proper divisors (16838427).

22961385 is a wasteful number, since it uses less digits than its factorization.

22961385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510264 (or 510261 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 22961385 is about 4791.8039400627. The cubic root of 22961385 is about 284.2274553215.

The spelling of 22961385 in words is "twenty-two million, nine hundred sixty-one thousand, three hundred eighty-five".