345785280 has 56 divisors (see below), whose sum is σ = 1097871312. Its totient is φ = 92209152.

The previous prime is 345785273. The next prime is 345785333. The reversal of 345785280 is 82587543.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

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 7 ways as a sum of consecutive naturals, for example, 179137 + ... + 181056.

Almost surely, 2^345785280 is an apocalyptic number.

345785280 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

345785280 is an abundant number, since it is smaller than the sum of its proper divisors (752086032).

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

345785280 is a wasteful number, since it uses less digits than its factorization.

345785280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360213 (or 360203 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 42.

The square root of 345785280 is about 18595.3026326543. The cubic root of 345785280 is about 701.8896426388.

The spelling of 345785280 in words is "three hundred forty-five million, seven hundred eighty-five thousand, two hundred eighty".