345193520 has 80 divisors (see below), whose sum is σ = 965533440. Its totient is φ = 112119552.

The previous prime is 345193489. The next prime is 345193529. The reversal of 345193520 is 25391543.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (345193529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5582 + ... + 26861.

It is an arithmetic number, because the mean of its divisors is an integer number (12069168).

Almost surely, 2^345193520 is an apocalyptic number.

It is an amenable number.

345193520 is an abundant number, since it is smaller than the sum of its proper divisors (620339920).

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

345193520 is a wasteful number, since it uses less digits than its factorization.

345193520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32482 (or 32476 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 345193520 is about 18579.3842739742. The cubic root of 345193520 is about 701.4890208260.

The spelling of 345193520 in words is "three hundred forty-five million, one hundred ninety-three thousand, five hundred twenty".