2528865740 has 24 divisors (see below), whose sum is σ = 5311636512. Its totient is φ = 1011352320.

The previous prime is 2528865739. The next prime is 2528865767. The reversal of 2528865740 is 475688252.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 143492 + ... + 160148.

It is an arithmetic number, because the mean of its divisors is an integer number (221318188).

Almost surely, 2^2528865740 is an apocalyptic number.

2528865740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2528865740 is an abundant number, since it is smaller than the sum of its proper divisors (2782770772).

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

2528865740 is a wasteful number, since it uses less digits than its factorization.

2528865740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24257 (or 24255 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 47.

The square root of 2528865740 is about 50287.8289449843. The cubic root of 2528865740 is about 1362.4124101592.

The spelling of 2528865740 in words is "two billion, five hundred twenty-eight million, eight hundred sixty-five thousand, seven hundred forty".