340304778 has 24 divisors (see below), whose sum is σ = 804357216. Its totient is φ = 103122600.

The previous prime is 340304771. The next prime is 340304813. The reversal of 340304778 is 877403043.

340304778 is a `hidden beast` number, since 340 + 304 + 7 + 7 + 8 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (340304771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 859158 + ... + 859553.

It is an arithmetic number, because the mean of its divisors is an integer number (33514884).

Almost surely, 2^340304778 is an apocalyptic number.

340304778 is an abundant number, since it is smaller than the sum of its proper divisors (464052438).

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

340304778 is a wasteful number, since it uses less digits than its factorization.

340304778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1718730 (or 1718727 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The square root of 340304778 is about 18447.3515172233. The cubic root of 340304778 is about 698.1616921929.

The spelling of 340304778 in words is "three hundred forty million, three hundred four thousand, seven hundred seventy-eight".