2316440 has 32 divisors (see below), whose sum is σ = 5957280. Its totient is φ = 794112.

The previous prime is 2316421. The next prime is 2316449. The reversal of 2316440 is 446132.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2316449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3857 + ... + 4416.

It is an arithmetic number, because the mean of its divisors is an integer number (186165).

2^2316440 is an apocalyptic number.

2316440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2316440 is an abundant number, since it is smaller than the sum of its proper divisors (3640840).

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

2316440 is a wasteful number, since it uses less digits than its factorization.

2316440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8291 (or 8287 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2316440 is about 1521.9855452664. The cubic root of 2316440 is about 132.3143716033.

The spelling of 2316440 in words is "two million, three hundred sixteen thousand, four hundred forty".