340944778 has 16 divisors (see below), whose sum is σ = 561741120. Its totient is φ = 154478016.

The previous prime is 340944743. The next prime is 340944781. The reversal of 340944778 is 877449043.

It is a Harshad number since it is a multiple of its sum of digits (46).

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, 194175 + ... + 195922.

It is an arithmetic number, because the mean of its divisors is an integer number (35108820).

Almost surely, 2^340944778 is an apocalyptic number.

340944778 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

340944778 is a deficient number, since it is larger than the sum of its proper divisors (220796342).

340944778 is a wasteful number, since it uses less digits than its factorization.

340944778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390141.

The product of its (nonzero) digits is 677376, while the sum is 46.

The square root of 340944778 is about 18464.6900326001. The cubic root of 340944778 is about 698.5990880171.

The spelling of 340944778 in words is "three hundred forty million, nine hundred forty-four thousand, seven hundred seventy-eight".