28866357 has 48 divisors (see below), whose sum is σ = 49690368. Its totient is φ = 15966720.

The previous prime is 28866329. The next prime is 28866371. The reversal of 28866357 is 75366882.

28866357 is a `hidden beast` number, since 2 + 8 + 8 + 6 + 635 + 7 = 666.

It is not a de Polignac number, because 28866357 - 2¹² = 28862261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28866307) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 45432 + ... + 46062.

It is an arithmetic number, because the mean of its divisors is an integer number (1035216).

Almost surely, 2^28866357 is an apocalyptic number.

It is an amenable number.

28866357 is a deficient number, since it is larger than the sum of its proper divisors (20824011).

28866357 is a wasteful number, since it uses less digits than its factorization.

28866357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690 (or 687 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 28866357 is about 5372.7420373586. The cubic root of 28866357 is about 306.7590090272.

The spelling of 28866357 in words is "twenty-eight million, eight hundred sixty-six thousand, three hundred fifty-seven".