28856367 has 12 divisors (see below), whose sum is σ = 41805400. Its totient is φ = 19180368.

The previous prime is 28856339. The next prime is 28856371. The reversal of 28856367 is 76365882.

28856367 is a `hidden beast` number, since 2 + 8 + 8 + 5 + 636 + 7 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-28856367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28856767) 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, 1453 + ... + 7734.

Almost surely, 2^28856367 is an apocalyptic number.

28856367 is a deficient number, since it is larger than the sum of its proper divisors (12949033).

28856367 is a wasteful number, since it uses less digits than its factorization.

28856367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9542 (or 9539 counting only the distinct ones).

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

The square root of 28856367 is about 5371.8122640316. The cubic root of 28856367 is about 306.7236174686.

The spelling of 28856367 in words is "twenty-eight million, eight hundred fifty-six thousand, three hundred sixty-seven".