345984278 has 16 divisors (see below), whose sum is σ = 538534656. Its totient is φ = 166586280.

The previous prime is 345984271. The next prime is 345984283. The reversal of 345984278 is 872489543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345984271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22226 + ... + 34437.

It is an arithmetic number, because the mean of its divisors is an integer number (33658416).

Almost surely, 2^345984278 is an apocalyptic number.

345984278 is a deficient number, since it is larger than the sum of its proper divisors (192550378).

345984278 is a wasteful number, since it uses less digits than its factorization.

345984278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56779.

The product of its digits is 1935360, while the sum is 50.

The square root of 345984278 is about 18600.6526229592. The cubic root of 345984278 is about 702.0242616810.

The spelling of 345984278 in words is "three hundred forty-five million, nine hundred eighty-four thousand, two hundred seventy-eight".