2521535328 has 72 divisors (see below), whose sum is σ = 7722213408. Its totient is φ = 775855872.

The previous prime is 2521535299. The next prime is 2521535329. The reversal of 2521535328 is 8235351252.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2521535292 and 2521535301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521535329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 333000 + ... + 340487.

It is an arithmetic number, because the mean of its divisors is an integer number (107252964).

Almost surely, 2^2521535328 is an apocalyptic number.

It is an amenable number.

2521535328 is an abundant number, since it is smaller than the sum of its proper divisors (5200678080).

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

2521535328 is a wasteful number, since it uses less digits than its factorization.

2521535328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673516 (or 673505 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 2521535328 is about 50214.8914964475. The cubic root of 2521535328 is about 1361.0947298658.

The spelling of 2521535328 in words is "two billion, five hundred twenty-one million, five hundred thirty-five thousand, three hundred twenty-eight".