344683840 has 56 divisors (see below), whose sum is σ = 869073192. Its totient is φ = 129761280.

The previous prime is 344683817. The next prime is 344683847. The reversal of 344683840 is 48386443.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 66194496 + 278489344 = 8136^2 + 16688^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 344683793 and 344683802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344683847) 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, 26241 + ... + 37120.

Almost surely, 2^344683840 is an apocalyptic number.

It is an amenable number.

344683840 is an abundant number, since it is smaller than the sum of its proper divisors (524389352).

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

344683840 is a wasteful number, since it uses less digits than its factorization.

344683840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63395 (or 63385 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 40.

The square root of 344683840 is about 18565.6629291819. The cubic root of 344683840 is about 701.1436000545.

The spelling of 344683840 in words is "three hundred forty-four million, six hundred eighty-three thousand, eight hundred forty".