28712496 has 60 divisors (see below), whose sum is σ = 78330552. Its totient is φ = 9061632.

The previous prime is 28712459. The next prime is 28712501. The reversal of 28712496 is 69421782.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16500 + ... + 18156.

Almost surely, 2^28712496 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28712496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39165276).

28712496 is an abundant number, since it is smaller than the sum of its proper divisors (49618056).

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

28712496 is a wasteful number, since it uses less digits than its factorization.

28712496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1706 (or 1681 counting only the distinct ones).

The product of its digits is 48384, while the sum is 39.

The square root of 28712496 is about 5358.4042400700. The cubic root of 28712496 is about 306.2130175528.

The spelling of 28712496 in words is "twenty-eight million, seven hundred twelve thousand, four hundred ninety-six".