22941581 has 24 divisors (see below), whose sum is σ = 26703360. Its totient is φ = 19656000.

The previous prime is 22941563. The next prime is 22941601. The reversal of 22941581 is 18514922.

It is a de Polignac number, because none of the positive numbers 2^k-22941581 is a prime.

It is a super-2 number, since 2×22941581² = 1052632277559122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22941481) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 151856 + ... + 152006.

It is an arithmetic number, because the mean of its divisors is an integer number (1112640).

Almost surely, 2^22941581 is an apocalyptic number.

It is an amenable number.

22941581 is a deficient number, since it is larger than the sum of its proper divisors (3761779).

22941581 is a wasteful number, since it uses less digits than its factorization.

22941581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237 (or 224 counting only the distinct ones).

The product of its digits is 5760, while the sum is 32.

The square root of 22941581 is about 4789.7370491500. The cubic root of 22941581 is about 284.1457172269.

The spelling of 22941581 in words is "twenty-two million, nine hundred forty-one thousand, five hundred eighty-one".