2587638380 has 12 divisors (see below), whose sum is σ = 5434040640. Its totient is φ = 1035055344.

The previous prime is 2587638377. The next prime is 2587638407. The reversal of 2587638380 is 838367852.

2587638380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64690940 + ... + 64690979.

It is an arithmetic number, because the mean of its divisors is an integer number (452836720).

Almost surely, 2^2587638380 is an apocalyptic number.

2587638380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2587638380 is an abundant number, since it is smaller than the sum of its proper divisors (2846402260).

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

2587638380 is a wasteful number, since it uses less digits than its factorization.

2587638380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129381928 (or 129381926 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 50.

The square root of 2587638380 is about 50868.8350564469. The cubic root of 2587638380 is about 1372.8861633385.

The spelling of 2587638380 in words is "two billion, five hundred eighty-seven million, six hundred thirty-eight thousand, three hundred eighty".