28587474 has 12 divisors (see below), whose sum is σ = 61939566. Its totient is φ = 9529152.

The previous prime is 28587463. The next prime is 28587491. The reversal of 28587474 is 47478582.

28587474 is a `hidden beast` number, since 28 + 587 + 47 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 26163225 + 2424249 = 5115^2 + 1557^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 794079 + ... + 794114.

Almost surely, 2^28587474 is an apocalyptic number.

28587474 is an abundant number, since it is smaller than the sum of its proper divisors (33352092).

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

28587474 is a wasteful number, since it uses less digits than its factorization.

28587474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1588201 (or 1588198 counting only the distinct ones).

The product of its digits is 501760, while the sum is 45.

The square root of 28587474 is about 5346.7255399917. The cubic root of 28587474 is about 305.7679260490.

The spelling of 28587474 in words is "twenty-eight million, five hundred eighty-seven thousand, four hundred seventy-four".