28648587 has 32 divisors (see below), whose sum is σ = 44513280. Its totient is φ = 16197120.

The previous prime is 28648573. The next prime is 28648601. The reversal of 28648587 is 78584682.

It is an interprime number because it is at equal distance from previous prime (28648573) and next prime (28648601).

It is not a de Polignac number, because 28648587 - 2¹¹ = 28646539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28648517) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 124989 + ... + 125217.

It is an arithmetic number, because the mean of its divisors is an integer number (1391040).

Almost surely, 2^28648587 is an apocalyptic number.

28648587 is a deficient number, since it is larger than the sum of its proper divisors (15864693).

28648587 is a wasteful number, since it uses less digits than its factorization.

28648587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483.

The product of its digits is 860160, while the sum is 48.

The square root of 28648587 is about 5352.4374821197. The cubic root of 28648587 is about 305.9856565535.

The spelling of 28648587 in words is "twenty-eight million, six hundred forty-eight thousand, five hundred eighty-seven".