347640940 has 12 divisors (see below), whose sum is σ = 730046016. Its totient is φ = 139056368.

The previous prime is 347640911. The next prime is 347640941. The reversal of 347640940 is 49046743.

It is a self number, because there is not a number n which added to its sum of digits gives 347640940.

It is not an unprimeable number, because it can be changed into a prime (347640941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8691004 + ... + 8691043.

It is an arithmetic number, because the mean of its divisors is an integer number (60837168).

Almost surely, 2^347640940 is an apocalyptic number.

It is an amenable number.

347640940 is an abundant number, since it is smaller than the sum of its proper divisors (382405076).

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

347640940 is a wasteful number, since it uses less digits than its factorization.

347640940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17382056 (or 17382054 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 347640940 is about 18645.1318043075. The cubic root of 347640940 is about 703.1429691276.

The spelling of 347640940 in words is "three hundred forty-seven million, six hundred forty thousand, nine hundred forty".