2390987880 has 48 divisors (see below), whose sum is σ = 7770711780. Its totient is φ = 637596672.

The previous prime is 2390987869. The next prime is 2390987881. The reversal of 2390987880 is 887890932.

It can be written as a sum of positive squares in 2 ways, for example, as 2357879364 + 33108516 = 48558^2 + 5754^2 .

It is not an unprimeable number, because it can be changed into a prime (2390987881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3320457 + ... + 3321176.

Almost surely, 2^2390987880 is an apocalyptic number.

2390987880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2390987880 is an abundant number, since it is smaller than the sum of its proper divisors (5379723900).

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

2390987880 is a wasteful number, since it uses less digits than its factorization.

2390987880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6641650 (or 6641643 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The square root of 2390987880 is about 48897.7287816111. The cubic root of 2390987880 is about 1337.1879620285.

The spelling of 2390987880 in words is "two billion, three hundred ninety million, nine hundred eighty-seven thousand, eight hundred eighty".