344505420 has 96 divisors (see below), whose sum is σ = 1224921600. Its totient is φ = 78743232.

The previous prime is 344505377. The next prime is 344505437. The reversal of 344505420 is 24505443.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41790 + ... + 49349.

It is an arithmetic number, because the mean of its divisors is an integer number (12759600).

Almost surely, 2^344505420 is an apocalyptic number.

344505420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

344505420 is an abundant number, since it is smaller than the sum of its proper divisors (880416180).

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

344505420 is a wasteful number, since it uses less digits than its factorization.

344505420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91164 (or 91156 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 344505420 is about 18560.8572000325. The cubic root of 344505420 is about 701.0226006363.

The spelling of 344505420 in words is "three hundred forty-four million, five hundred five thousand, four hundred twenty".