345259920 has 40 divisors (see below), whose sum is σ = 1070306496. Its totient is φ = 92069248.

The previous prime is 345259867. The next prime is 345259949. The reversal of 345259920 is 29952543.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 719052 + ... + 719531.

Almost surely, 2^345259920 is an apocalyptic number.

345259920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

345259920 is an abundant number, since it is smaller than the sum of its proper divisors (725046576).

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

345259920 is a wasteful number, since it uses less digits than its factorization.

345259920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1438599 (or 1438593 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 39.

The square root of 345259920 is about 18581.1711148679. The cubic root of 345259920 is about 701.5339964527.

The spelling of 345259920 in words is "three hundred forty-five million, two hundred fifty-nine thousand, nine hundred twenty".