345047840 has 48 divisors (see below), whose sum is σ = 850627008. Its totient is φ = 132016896.

The previous prime is 345047839. The next prime is 345047851. The reversal of 345047840 is 48740543.

It is a self number, because there is not a number n which added to its sum of digits gives 345047840.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43202 + ... + 50561.

It is an arithmetic number, because the mean of its divisors is an integer number (17721396).

Almost surely, 2^345047840 is an apocalyptic number.

It is an amenable number.

345047840 is an abundant number, since it is smaller than the sum of its proper divisors (505579168).

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

345047840 is a wasteful number, since it uses less digits than its factorization.

345047840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93801 (or 93793 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 35.

The square root of 345047840 is about 18575.4633858755. The cubic root of 345047840 is about 701.3903251727.

The spelling of 345047840 in words is "three hundred forty-five million, forty-seven thousand, eight hundred forty".