28576377 has 12 divisors (see below), whose sum is σ = 41326740. Its totient is φ = 19027968.

The previous prime is 28576369. The next prime is 28576393. The reversal of 28576377 is 77367582.

28576377 is a `hidden beast` number, since 2 + 8 + 5 + 7 + 637 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11634921 + 16941456 = 3411^2 + 4116^2 .

It is not a de Polignac number, because 28576377 - 2³ = 28576369 is a prime.

It is a super-2 number, since 2×28576377² = 1633218644892258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28576367) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9649 + ... + 12257.

It is an arithmetic number, because the mean of its divisors is an integer number (3443895).

Almost surely, 2^28576377 is an apocalyptic number.

It is an amenable number.

28576377 is a deficient number, since it is larger than the sum of its proper divisors (12750363).

28576377 is a wasteful number, since it uses less digits than its factorization.

28576377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3832 (or 3829 counting only the distinct ones).

The product of its digits is 493920, while the sum is 45.

The square root of 28576377 is about 5345.6877013159. The cubic root of 28576377 is about 305.7283569028.

The spelling of 28576377 in words is "twenty-eight million, five hundred seventy-six thousand, three hundred seventy-seven".