345640080 has 80 divisors (see below), whose sum is σ = 1106072064. Its totient is φ = 89195520.

The previous prime is 345640027. The next prime is 345640103. The reversal of 345640080 is 80046543.

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

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 15789 + ... + 30668.

Almost surely, 2^345640080 is an apocalyptic number.

345640080 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

345640080 is an abundant number, since it is smaller than the sum of its proper divisors (760431984).

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

345640080 is a wasteful number, since it uses less digits than its factorization.

345640080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46504 (or 46498 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 345640080 is about 18591.3980109082. The cubic root of 345640080 is about 701.7913845092.

The spelling of 345640080 in words is "three hundred forty-five million, six hundred forty thousand, eighty".