22387057 has 12 divisors (see below), whose sum is σ = 28123648. Its totient is φ = 17443800.

The previous prime is 22387049. The next prime is 22387093. The reversal of 22387057 is 75078322.

It is not a de Polignac number, because 22387057 - 2³ = 22387049 is a prime.

It is a super-2 number, since 2×22387057² = 1002360642242498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22387007) 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 11 ways as a sum of consecutive naturals, for example, 12369 + ... + 14062.

Almost surely, 2^22387057 is an apocalyptic number.

It is an amenable number.

22387057 is a deficient number, since it is larger than the sum of its proper divisors (5736591).

22387057 is a wasteful number, since it uses less digits than its factorization.

22387057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26460 (or 26449 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 22387057 is about 4731.4962749642. The cubic root of 22387057 is about 281.8376452581.

The spelling of 22387057 in words is "twenty-two million, three hundred eighty-seven thousand, fifty-seven".