28614987 has 12 divisors (see below), whose sum is σ = 41379520. Its totient is φ = 19055088.

The previous prime is 28614983. The next prime is 28614991. The reversal of 28614987 is 78941682.

28614987 is a `hidden beast` number, since 28 + 614 + 9 + 8 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (28614983) and next prime (28614991).

It is not a de Polignac number, because 28614987 - 2² = 28614983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28614983) 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, 13089 + ... + 15117.

Almost surely, 2^28614987 is an apocalyptic number.

28614987 is a deficient number, since it is larger than the sum of its proper divisors (12764533).

28614987 is a wasteful number, since it uses less digits than its factorization.

28614987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3602 (or 3599 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 28614987 is about 5349.2978043852. The cubic root of 28614987 is about 305.8659864278.

The spelling of 28614987 in words is "twenty-eight million, six hundred fourteen thousand, nine hundred eighty-seven".