345854778 has 16 divisors (see below), whose sum is σ = 695333376. Its totient is φ = 114680960.

The previous prime is 345854771. The next prime is 345854809. The reversal of 345854778 is 877458543.

It is a self number, because there is not a number n which added to its sum of digits gives 345854778.

It is not an unprimeable number, because it can be changed into a prime (345854771) 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, 149751 + ... + 152042.

It is an arithmetic number, because the mean of its divisors is an integer number (43458336).

Almost surely, 2^345854778 is an apocalyptic number.

345854778 is an abundant number, since it is smaller than the sum of its proper divisors (349478598).

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

345854778 is a wasteful number, since it uses less digits than its factorization.

345854778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301989.

The product of its digits is 3763200, while the sum is 51.

The square root of 345854778 is about 18597.1712365080. The cubic root of 345854778 is about 701.9366628192.

The spelling of 345854778 in words is "three hundred forty-five million, eight hundred fifty-four thousand, seven hundred seventy-eight".