345953640 has 64 divisors (see below), whose sum is σ = 1051027200. Its totient is φ = 91084032.

The previous prime is 345953623. The next prime is 345953669. The reversal of 345953640 is 46359543.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8767 + ... + 27726.

It is an arithmetic number, because the mean of its divisors is an integer number (16422300).

Almost surely, 2^345953640 is an apocalyptic number.

345953640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

345953640 is an abundant number, since it is smaller than the sum of its proper divisors (705073560).

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

345953640 is a wasteful number, since it uses less digits than its factorization.

345953640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36586 (or 36582 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 39.

The square root of 345953640 is about 18599.8290314723. The cubic root of 345953640 is about 702.0035389145.

The spelling of 345953640 in words is "three hundred forty-five million, nine hundred fifty-three thousand, six hundred forty".