28286488 has 16 divisors (see below), whose sum is σ = 53937000. Its totient is φ = 13903296.

The previous prime is 28286441. The next prime is 28286501. The reversal of 28286488 is 88468282.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29493 + ... + 30436.

Almost surely, 2^28286488 is an apocalyptic number.

It is an amenable number.

28286488 is a deficient number, since it is larger than the sum of its proper divisors (25650512).

28286488 is a wasteful number, since it uses less digits than its factorization.

28286488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59994 (or 59990 counting only the distinct ones).

The product of its digits is 393216, while the sum is 46.

The square root of 28286488 is about 5318.5043010230. The cubic root of 28286488 is about 304.6910353287.

It can be divided in two parts, 2828 and 6488, that added together give a triangular number (9316 = T₁₃₆).

The spelling of 28286488 in words is "twenty-eight million, two hundred eighty-six thousand, four hundred eighty-eight".