28876887 has 12 divisors (see below), whose sum is σ = 44919784. Its totient is φ = 17770320.

The previous prime is 28876877. The next prime is 28876919. The reversal of 28876887 is 78867882.

It is not a de Polignac number, because 28876887 - 2⁶ = 28876823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28876807) 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, 123289 + ... + 123522.

Almost surely, 2^28876887 is an apocalyptic number.

28876887 is a deficient number, since it is larger than the sum of its proper divisors (16042897).

28876887 is a wasteful number, since it uses less digits than its factorization.

28876887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246830 (or 246827 counting only the distinct ones).

The product of its digits is 2408448, while the sum is 54.

The square root of 28876887 is about 5373.7218945532. The cubic root of 28876887 is about 306.7963048045.

The spelling of 28876887 in words is "twenty-eight million, eight hundred seventy-six thousand, eight hundred eighty-seven".