2528733987 has 18 divisors (see below), whose sum is σ = 3955201692. Its totient is φ = 1556143056.

The previous prime is 2528733853. The next prime is 2528734007. The reversal of 2528733987 is 7893378252.

2528733987 is a `hidden beast` number, since 2 + 528 + 7 + 3 + 39 + 87 = 666.

It is not a de Polignac number, because 2528733987 - 2¹⁹ = 2528209699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2528733287) 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 17 ways as a sum of consecutive naturals, for example, 829753 + ... + 832794.

Almost surely, 2^2528733987 is an apocalyptic number.

2528733987 is a deficient number, since it is larger than the sum of its proper divisors (1426467705).

2528733987 is a wasteful number, since it uses less digits than its factorization.

2528733987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662579 (or 1662563 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 54.

The square root of 2528733987 is about 50286.5189389761. The cubic root of 2528733987 is about 1362.3887493487.

The spelling of 2528733987 in words is "two billion, five hundred twenty-eight million, seven hundred thirty-three thousand, nine hundred eighty-seven".