2528782815 has 32 divisors (see below), whose sum is σ = 4384074240. Its totient is φ = 1237286016.

The previous prime is 2528782813. The next prime is 2528782847. The reversal of 2528782815 is 5182878252.

It is not a de Polignac number, because 2528782815 - 2¹ = 2528782813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2528782813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7995 + ... + 71564.

It is an arithmetic number, because the mean of its divisors is an integer number (137002320).

Almost surely, 2^2528782815 is an apocalyptic number.

2528782815 is a deficient number, since it is larger than the sum of its proper divisors (1855291425).

2528782815 is a wasteful number, since it uses less digits than its factorization.

2528782815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79743.

The product of its digits is 716800, while the sum is 48.

The square root of 2528782815 is about 50287.0044345455. The cubic root of 2528782815 is about 1362.3975182016.

The spelling of 2528782815 in words is "two billion, five hundred twenty-eight million, seven hundred eighty-two thousand, eight hundred fifteen".