28782516 has 48 divisors (see below), whose sum is σ = 77092736. Its totient is φ = 8187264.

The previous prime is 28782503. The next prime is 28782521. The reversal of 28782516 is 61528782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22650 + ... + 23886.

Almost surely, 2^28782516 is an apocalyptic number.

It is an amenable number.

28782516 is an abundant number, since it is smaller than the sum of its proper divisors (48310220).

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

28782516 is a wasteful number, since it uses less digits than its factorization.

28782516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528 (or 1526 counting only the distinct ones).

The product of its digits is 53760, while the sum is 39.

The square root of 28782516 is about 5364.9339231718. The cubic root of 28782516 is about 306.4617319098.

The spelling of 28782516 in words is "twenty-eight million, seven hundred eighty-two thousand, five hundred sixteen".