22857890 has 16 divisors (see below), whose sum is σ = 44884800. Its totient is φ = 8311920.

The previous prime is 22857871. The next prime is 22857917. The reversal of 22857890 is 9875822.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 103790 + ... + 104009.

It is an arithmetic number, because the mean of its divisors is an integer number (2805300).

Almost surely, 2^22857890 is an apocalyptic number.

22857890 is a deficient number, since it is larger than the sum of its proper divisors (22026910).

22857890 is a wasteful number, since it uses less digits than its factorization.

22857890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207817.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 22857890 is about 4780.9925747694. The cubic root of 22857890 is about 283.7997745617.

The spelling of 22857890 in words is "twenty-two million, eight hundred fifty-seven thousand, eight hundred ninety".