2528782539 has 8 divisors (see below), whose sum is σ = 3428857920. Its totient is φ = 1657281096.

The previous prime is 2528782519. The next prime is 2528782549. The reversal of 2528782539 is 9352878252.

It is a happy number.

2528782539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2528782539 - 2⁷ = 2528782411 is a prime.

It is a super-2 number, since 2×2528782539² = 12789482259102573042, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2528782491 and 2528782500.

It is not an unprimeable number, because it can be changed into a prime (2528782519) 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, 7143277 + ... + 7143630.

It is an arithmetic number, because the mean of its divisors is an integer number (428607240).

Almost surely, 2^2528782539 is an apocalyptic number.

2528782539 is a deficient number, since it is larger than the sum of its proper divisors (900075381).

2528782539 is a wasteful number, since it uses less digits than its factorization.

2528782539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14286969.

The product of its digits is 2419200, while the sum is 51.

The square root of 2528782539 is about 50287.0016902977. The cubic root of 2528782539 is about 1362.3974686361.

The spelling of 2528782539 in words is "two billion, five hundred twenty-eight million, seven hundred eighty-two thousand, five hundred thirty-nine".