345500080 has 80 divisors (see below), whose sum is σ = 831536064. Its totient is φ = 133401600.

The previous prime is 345500069. The next prime is 345500081. The reversal of 345500080 is 80005543.

It is a happy number.

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 (345500081) 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, 446574 + ... + 447346.

Almost surely, 2^345500080 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 345500080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (415768032).

345500080 is an abundant number, since it is smaller than the sum of its proper divisors (486035984).

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

345500080 is a wasteful number, since it uses less digits than its factorization.

345500080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974 (or 968 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 345500080 is about 18587.6324474098. The cubic root of 345500080 is about 701.6966192048.

The spelling of 345500080 in words is "three hundred forty-five million, five hundred thousand, eighty".