28570782 has 16 divisors (see below), whose sum is σ = 57215232. Its totient is φ = 9511320.

The previous prime is 28570781. The next prime is 28570793. The reversal of 28570782 is 28707582.

It is a self number, because there is not a number n which added to its sum of digits gives 28570782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28570781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2853 + ... + 8079.

It is an arithmetic number, because the mean of its divisors is an integer number (3575952).

Almost surely, 2^28570782 is an apocalyptic number.

28570782 is an abundant number, since it is smaller than the sum of its proper divisors (28644450).

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

28570782 is a wasteful number, since it uses less digits than its factorization.

28570782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6143.

The product of its (nonzero) digits is 62720, while the sum is 39.

The square root of 28570782 is about 5345.1643566873. The cubic root of 28570782 is about 305.7084026377.

The spelling of 28570782 in words is "twenty-eight million, five hundred seventy thousand, seven hundred eighty-two".