28488087 has 12 divisors (see below), whose sum is σ = 43315480. Its totient is φ = 17992368.

The previous prime is 28488067. The next prime is 28488127. The reversal of 28488087 is 78088482.

It is not a de Polignac number, because 28488087 - 2⁶ = 28488023 is a prime.

It is a super-2 number, since 2×28488087² = 1623142201839138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28488017) 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, 83128 + ... + 83469.

Almost surely, 2^28488087 is an apocalyptic number.

28488087 is a deficient number, since it is larger than the sum of its proper divisors (14827393).

28488087 is a wasteful number, since it uses less digits than its factorization.

28488087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166622 (or 166619 counting only the distinct ones).

The product of its (nonzero) digits is 229376, while the sum is 45.

The square root of 28488087 is about 5337.4232547176. The cubic root of 28488087 is about 305.4131711170.

The spelling of 28488087 in words is "twenty-eight million, four hundred eighty-eight thousand, eighty-seven".