28866087 has 12 divisors (see below), whose sum is σ = 41833584. Its totient is φ = 19180320.

The previous prime is 28866083. The next prime is 28866109. The reversal of 28866087 is 78066882.

It is not a de Polignac number, because 28866087 - 2² = 28866083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28866083) 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, 2358 + ... + 7955.

It is an arithmetic number, because the mean of its divisors is an integer number (3486132).

Almost surely, 2^28866087 is an apocalyptic number.

28866087 is a deficient number, since it is larger than the sum of its proper divisors (12967497).

28866087 is a wasteful number, since it uses less digits than its factorization.

28866087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10630 (or 10627 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 28866087 is about 5372.7169104653. The cubic root of 28866087 is about 306.7580526059.

The spelling of 28866087 in words is "twenty-eight million, eight hundred sixty-six thousand, eighty-seven".