345942978 has 32 divisors (see below), whose sum is σ = 711986112. Its totient is φ = 112008000.

The previous prime is 345942973. The next prime is 345943033. The reversal of 345942978 is 879249543.

It is a self number, because there is not a number n which added to its sum of digits gives 345942978.

It is not an unprimeable number, because it can be changed into a prime (345942973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26733 + ... + 37503.

It is an arithmetic number, because the mean of its divisors is an integer number (22249566).

Almost surely, 2^345942978 is an apocalyptic number.

345942978 is an abundant number, since it is smaller than the sum of its proper divisors (366043134).

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

345942978 is a wasteful number, since it uses less digits than its factorization.

345942978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10930.

The product of its digits is 2177280, while the sum is 51.

The square root of 345942978 is about 18599.5424137262. The cubic root of 345942978 is about 701.9963271210.

The spelling of 345942978 in words is "three hundred forty-five million, nine hundred forty-two thousand, nine hundred seventy-eight".