22857087 has 16 divisors (see below), whose sum is σ = 33956352. Its totient is φ = 13557120.

The previous prime is 22857059. The next prime is 22857089. The reversal of 22857087 is 78075822.

It is not a de Polignac number, because 22857087 - 2¹⁴ = 22840703 is a prime.

It is a super-2 number, since 2×22857087² = 1044892852251138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22857089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5818 + ... + 8919.

It is an arithmetic number, because the mean of its divisors is an integer number (2122272).

Almost surely, 2^22857087 is an apocalyptic number.

22857087 is a deficient number, since it is larger than the sum of its proper divisors (11099265).

22857087 is a wasteful number, since it uses less digits than its factorization.

22857087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14798.

The product of its (nonzero) digits is 62720, while the sum is 39.

The square root of 22857087 is about 4780.9085956542. The cubic root of 22857087 is about 283.7964512178.

The spelling of 22857087 in words is "twenty-two million, eight hundred fifty-seven thousand, eighty-seven".