2528311780 has 24 divisors (see below), whose sum is σ = 5317515000. Its totient is φ = 1009789440.

The previous prime is 2528311759. The next prime is 2528311801. The reversal of 2528311780 is 871138252.

It is an interprime number because it is at equal distance from previous prime (2528311759) and next prime (2528311801).

It can be written as a sum of positive squares in 4 ways, for example, as 574848576 + 1953463204 = 23976^2 + 44198^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82405 + ... + 108844.

It is an arithmetic number, because the mean of its divisors is an integer number (221563125).

Almost surely, 2^2528311780 is an apocalyptic number.

2528311780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2528311780 is an abundant number, since it is smaller than the sum of its proper divisors (2789203220).

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

2528311780 is a wasteful number, since it uses less digits than its factorization.

2528311780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191919 (or 191917 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 2528311780 is about 50282.3207499415. The cubic root of 2528311780 is about 1362.3129219339.

The spelling of 2528311780 in words is "two billion, five hundred twenty-eight million, three hundred eleven thousand, seven hundred eighty".