2521688 has 16 divisors (see below), whose sum is σ = 5092080. Its totient is φ = 1163808.

The previous prime is 2521681. The next prime is 2521693. The reversal of 2521688 is 8861252.

2521688 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12020 + ... + 12227.

It is an arithmetic number, because the mean of its divisors is an integer number (318255).

2^2521688 is an apocalyptic number.

It is an amenable number.

2521688 is an abundant number, since it is smaller than the sum of its proper divisors (2570392).

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

2521688 is a wasteful number, since it uses less digits than its factorization.

2521688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24266 (or 24262 counting only the distinct ones).

The product of its digits is 7680, while the sum is 32.

The square root of 2521688 is about 1587.9823676603. The cubic root of 2521688 is about 136.1122199487.

The spelling of 2521688 in words is "two million, five hundred twenty-one thousand, six hundred eighty-eight".