2320780 has 72 divisors (see below), whose sum is σ = 6166944. Its totient is φ = 718080.

The previous prime is 2320741. The next prime is 2320807. The reversal of 2320780 is 870232.

2320780 = 56² + 57² + ... + 192².

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16872 + ... + 17008.

It is an arithmetic number, because the mean of its divisors is an integer number (85652).

2^2320780 is an apocalyptic number.

2320780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2320780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3083472).

2320780 is an abundant number, since it is smaller than the sum of its proper divisors (3846164).

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

2320780 is a wasteful number, since it uses less digits than its factorization.

2320780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175 (or 162 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 2320780 is about 1523.4106471992. The cubic root of 2320780 is about 132.3969532253.

The spelling of 2320780 in words is "two million, three hundred twenty thousand, seven hundred eighty".