345305472 has 32 divisors (see below), whose sum is σ = 917218680. Its totient is φ = 115101696.

The previous prime is 345305459. The next prime is 345305483. The reversal of 345305472 is 274503543.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 449233 + ... + 450000.

Almost surely, 2^345305472 is an apocalyptic number.

345305472 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

345305472 is an abundant number, since it is smaller than the sum of its proper divisors (571913208).

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

345305472 is an equidigital number, since it uses as much as digits as its factorization.

345305472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899250 (or 899238 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 33.

The square root of 345305472 is about 18582.3968314101. The cubic root of 345305472 is about 701.5648474817.

The spelling of 345305472 in words is "three hundred forty-five million, three hundred five thousand, four hundred seventy-two".