2331780 has 48 divisors (see below), whose sum is σ = 7124544. Its totient is φ = 565120.

The previous prime is 2331779. The next prime is 2331781. The reversal of 2331780 is 871332.

It is an interprime number because it is at equal distance from previous prime (2331779) and next prime (2331781).

It is a self number, because there is not a number n which added to its sum of digits gives 2331780.

It is not an unprimeable number, because it can be changed into a prime (2331781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1107 + ... + 2426.

It is an arithmetic number, because the mean of its divisors is an integer number (148428).

2^2331780 is an apocalyptic number.

2331780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2331780 is an abundant number, since it is smaller than the sum of its proper divisors (4792764).

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

2331780 is a wasteful number, since it uses less digits than its factorization.

2331780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3556 (or 3554 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 2331780 is about 1527.0166993193. The cubic root of 2331780 is about 132.6058013382.

The spelling of 2331780 in words is "two million, three hundred thirty-one thousand, seven hundred eighty".