344720 has 40 divisors (see below), whose sum is σ = 833280. Its totient is φ = 132480.

The previous prime is 344719. The next prime is 344749. The reversal of 344720 is 27443.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

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

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 344692 and 344701.

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, 2411 + ... + 2549.

It is an arithmetic number, because the mean of its divisors is an integer number (20832).

2³⁴⁴⁷²⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 344720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (416640).

344720 is an abundant number, since it is smaller than the sum of its proper divisors (488560).

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

344720 is a wasteful number, since it uses less digits than its factorization.

344720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 344720 is about 587.1286060140. The cubic root of 344720 is about 70.1168117659.

The spelling of 344720 in words is "three hundred forty-four thousand, seven hundred twenty", and thus it is an iban number.