2528289687 has 64 divisors (see below), whose sum is σ = 4430453760. Its totient is φ = 1244006400.

The previous prime is 2528289683. The next prime is 2528289703. The reversal of 2528289687 is 7869828252.

It is not a de Polignac number, because 2528289687 - 2² = 2528289683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2528289683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 351487 + ... + 358607.

It is an arithmetic number, because the mean of its divisors is an integer number (69225840).

Almost surely, 2^2528289687 is an apocalyptic number.

2528289687 is a deficient number, since it is larger than the sum of its proper divisors (1902164073).

2528289687 is a wasteful number, since it uses less digits than its factorization.

2528289687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7224.

The product of its digits is 7741440, while the sum is 57.

The square root of 2528289687 is about 50282.1010599199. The cubic root of 2528289687 is about 1362.3089538490.

The spelling of 2528289687 in words is "two billion, five hundred twenty-eight million, two hundred eighty-nine thousand, six hundred eighty-seven".