22371881 has 24 divisors (see below), whose sum is σ = 27923616. Its totient is φ = 17808000.

The previous prime is 22371871. The next prime is 22371889. The reversal of 22371881 is 18817322.

It is not a de Polignac number, because 22371881 - 2¹⁰ = 22370857 is a prime.

It is a super-2 number, since 2×22371881² = 1001002118956322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22371889) 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 23 ways as a sum of consecutive naturals, for example, 89006 + ... + 89256.

It is an arithmetic number, because the mean of its divisors is an integer number (1163484).

Almost surely, 2^22371881 is an apocalyptic number.

It is an amenable number.

22371881 is a deficient number, since it is larger than the sum of its proper divisors (5551735).

22371881 is a wasteful number, since it uses less digits than its factorization.

22371881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389 (or 382 counting only the distinct ones).

The product of its digits is 5376, while the sum is 32.

The square root of 22371881 is about 4729.8922820715. The cubic root of 22371881 is about 281.7739457292.

The spelling of 22371881 in words is "twenty-two million, three hundred seventy-one thousand, eight hundred eighty-one".