344989820 has 24 divisors (see below), whose sum is σ = 827975904. Its totient is φ = 118282176.

The previous prime is 344989807. The next prime is 344989837. The reversal of 344989820 is 28989443.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1231967 + ... + 1232246.

It is an arithmetic number, because the mean of its divisors is an integer number (34498996).

Almost surely, 2^344989820 is an apocalyptic number.

It is an amenable number.

344989820 is an abundant number, since it is smaller than the sum of its proper divisors (482986084).

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

344989820 is a wasteful number, since it uses less digits than its factorization.

344989820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2464229 (or 2464227 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 47.

The square root of 344989820 is about 18573.9015825970. The cubic root of 344989820 is about 701.3510099019.

The spelling of 344989820 in words is "three hundred forty-four million, nine hundred eighty-nine thousand, eight hundred twenty".