28976887 has 16 divisors (see below), whose sum is σ = 30888000. Its totient is φ = 27143424.

The previous prime is 28976879. The next prime is 28976903. The reversal of 28976887 is 78867982.

It is a cyclic number.

It is not a de Polignac number, because 28976887 - 2³ = 28976879 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 (28976867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265789 + ... + 265897.

It is an arithmetic number, because the mean of its divisors is an integer number (1930500).

Almost surely, 2^28976887 is an apocalyptic number.

28976887 is a deficient number, since it is larger than the sum of its proper divisors (1911113).

28976887 is a wasteful number, since it uses less digits than its factorization.

28976887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330.

The product of its digits is 2709504, while the sum is 55.

The square root of 28976887 is about 5383.0183912002. The cubic root of 28976887 is about 307.1500396579.

The spelling of 28976887 in words is "twenty-eight million, nine hundred seventy-six thousand, eight hundred eighty-seven".