28508562 has 12 divisors (see below), whose sum is σ = 61768590. Its totient is φ = 9502848.

The previous prime is 28508551. The next prime is 28508573. The reversal of 28508562 is 26580582.

It is an interprime number because it is at equal distance from previous prime (28508551) and next prime (28508573).

It can be written as a sum of positive squares in only one way, i.e., 21427641 + 7080921 = 4629^2 + 2661^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 791887 + ... + 791922.

Almost surely, 2^28508562 is an apocalyptic number.

28508562 is an abundant number, since it is smaller than the sum of its proper divisors (33260028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28508562 is a wasteful number, since it uses less digits than its factorization.

28508562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583817 (or 1583814 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 28508562 is about 5339.3409705693. The cubic root of 28508562 is about 305.4863225966.

The spelling of 28508562 in words is "twenty-eight million, five hundred eight thousand, five hundred sixty-two".