2087309920 has 24 divisors (see below), whose sum is σ = 4931270064. Its totient is φ = 834923904.

The previous prime is 2087309909. The next prime is 2087309933. The reversal of 2087309920 is 299037802.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

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, 6522684 + ... + 6523003.

It is an arithmetic number, because the mean of its divisors is an integer number (205469586).

Almost surely, 2^2087309920 is an apocalyptic number.

2087309920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2087309920 is an abundant number, since it is smaller than the sum of its proper divisors (2843960144).

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

2087309920 is a wasteful number, since it uses less digits than its factorization.

2087309920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13045702 (or 13045694 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 2087309920 is about 45687.0870159173. The cubic root of 2087309920 is about 1277.9944830749.

The spelling of 2087309920 in words is "two billion, eighty-seven million, three hundred nine thousand, nine hundred twenty".