22628871 has 12 divisors (see below), whose sum is σ = 33081048. Its totient is φ = 14903664.

The previous prime is 22628863. The next prime is 22628897. The reversal of 22628871 is 17882622.

It is a happy number.

22628871 is a `hidden beast` number, since 22 + 628 + 8 + 7 + 1 = 666.

It is not a de Polignac number, because 22628871 - 2³ = 22628863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22628821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14400 + ... + 15893.

It is an arithmetic number, because the mean of its divisors is an integer number (2756754).

Almost surely, 2^22628871 is an apocalyptic number.

22628871 is a deficient number, since it is larger than the sum of its proper divisors (10452177).

22628871 is a wasteful number, since it uses less digits than its factorization.

22628871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30382 (or 30379 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 22628871 is about 4756.9812906927. The cubic root of 22628871 is about 282.8487706867.

The spelling of 22628871 in words is "twenty-two million, six hundred twenty-eight thousand, eight hundred seventy-one".