2391980 has 24 divisors (see below), whose sum is σ = 5056800. Its totient is φ = 950400.

The previous prime is 2391979. The next prime is 2391997. The reversal of 2391980 is 891932.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3680 + ... + 4280.

It is an arithmetic number, because the mean of its divisors is an integer number (210700).

2^2391980 is an apocalyptic number.

2391980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2391980 is an abundant number, since it is smaller than the sum of its proper divisors (2664820).

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

2391980 is a wasteful number, since it uses less digits than its factorization.

2391980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809 (or 807 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 2391980 is about 1546.6027285635. The cubic root of 2391980 is about 133.7372888028.

The spelling of 2391980 in words is "two million, three hundred ninety-one thousand, nine hundred eighty".