344520428 has 12 divisors (see below), whose sum is σ = 689040912. Its totient is φ = 147651600.

The previous prime is 344520409. The next prime is 344520433. The reversal of 344520428 is 824025443.

344520428 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 344520394 and 344520403.

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, 6152123 + ... + 6152178.

It is an arithmetic number, because the mean of its divisors is an integer number (57420076).

Almost surely, 2^344520428 is an apocalyptic number.

It is an amenable number.

344520428 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

344520428 is a wasteful number, since it uses less digits than its factorization.

344520428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12304312 (or 12304310 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 32.

The square root of 344520428 is about 18561.2614873020. The cubic root of 344520428 is about 701.0327802482.

The spelling of 344520428 in words is "three hundred forty-four million, five hundred twenty thousand, four hundred twenty-eight".