2987136840 has 32 divisors (see below), whose sum is σ = 8961410880. Its totient is φ = 796569792.

The previous prime is 2987136839. The next prime is 2987136847. The reversal of 2987136840 is 486317892.

It is a self number, because there is not a number n which added to its sum of digits gives 2987136840.

It is not an unprimeable number, because it can be changed into a prime (2987136847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12446284 + ... + 12446523.

It is an arithmetic number, because the mean of its divisors is an integer number (280044090).

Almost surely, 2^2987136840 is an apocalyptic number.

2987136840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2987136840 is an abundant number, since it is smaller than the sum of its proper divisors (5974274040).

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

2987136840 is a wasteful number, since it uses less digits than its factorization.

2987136840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24892821 (or 24892817 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 48.

The square root of 2987136840 is about 54654.7055613696. The cubic root of 2987136840 is about 1440.1852963715.

The spelling of 2987136840 in words is "two billion, nine hundred eighty-seven million, one hundred thirty-six thousand, eight hundred forty".