2317820 has 12 divisors (see below), whose sum is σ = 4867464. Its totient is φ = 927120.

The previous prime is 2317813. The next prime is 2317841. The reversal of 2317820 is 287132.

2317820 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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, 57926 + ... + 57965.

It is an arithmetic number, because the mean of its divisors is an integer number (405622).

2^2317820 is an apocalyptic number.

2317820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2317820 is an abundant number, since it is smaller than the sum of its proper divisors (2549644).

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

2317820 is a wasteful number, since it uses less digits than its factorization.

2317820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115900 (or 115898 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 2317820 is about 1522.4388329256. The cubic root of 2317820 is about 132.3406414520.

The spelling of 2317820 in words is "two million, three hundred seventeen thousand, eight hundred twenty".