345938978 has 16 divisors (see below), whose sum is σ = 646951104. Its totient is φ = 134781360.

The previous prime is 345938963. The next prime is 345938987. The reversal of 345938978 is 879839543.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1123025 + ... + 1123332.

It is an arithmetic number, because the mean of its divisors is an integer number (40434444).

Almost surely, 2^345938978 is an apocalyptic number.

345938978 is a deficient number, since it is larger than the sum of its proper divisors (301012126).

345938978 is a wasteful number, since it uses less digits than its factorization.

345938978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2246377.

The product of its digits is 6531840, while the sum is 56.

The square root of 345938978 is about 18599.4348838883. The cubic root of 345938978 is about 701.9936214765.

The spelling of 345938978 in words is "three hundred forty-five million, nine hundred thirty-eight thousand, nine hundred seventy-eight".