22828557 has 24 divisors (see below), whose sum is σ = 32589216. Its totient is φ = 14210784.

The previous prime is 22828549. The next prime is 22828573. The reversal of 22828557 is 75582822.

It is a happy number.

It is not a de Polignac number, because 22828557 - 2³ = 22828549 is a prime.

It is a super-2 number, since 2×22828557² = 1042286029404498, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22828517) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115783 + ... + 115979.

It is an arithmetic number, because the mean of its divisors is an integer number (1357884).

Almost surely, 2^22828557 is an apocalyptic number.

It is an amenable number.

22828557 is a deficient number, since it is larger than the sum of its proper divisors (9760659).

22828557 is a wasteful number, since it uses less digits than its factorization.

22828557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345 (or 326 counting only the distinct ones).

The product of its digits is 89600, while the sum is 39.

The square root of 22828557 is about 4777.9239215375. The cubic root of 22828557 is about 283.6783247065.

The spelling of 22828557 in words is "twenty-two million, eight hundred twenty-eight thousand, five hundred fifty-seven".