345443520 has 56 divisors (see below), whose sum is σ = 1096786224. Its totient is φ = 92118016.

The previous prime is 345443513. The next prime is 345443543. The reversal of 345443520 is 25344543.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178959 + ... + 180878.

Almost surely, 2^345443520 is an apocalyptic number.

345443520 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

345443520 is an abundant number, since it is smaller than the sum of its proper divisors (751342704).

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

345443520 is a wasteful number, since it uses less digits than its factorization.

345443520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359857 (or 359847 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 30.

The square root of 345443520 is about 18586.1109433900. The cubic root of 345443520 is about 701.6583267615.

The spelling of 345443520 in words is "three hundred forty-five million, four hundred forty-three thousand, five hundred twenty".