345762778 has 32 divisors (see below), whose sum is σ = 550126080. Its totient is φ = 162751680.

The previous prime is 345762761. The next prime is 345762803. The reversal of 345762778 is 877267543.

It is a happy number.

345762778 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 456376 + ... + 457132.

It is an arithmetic number, because the mean of its divisors is an integer number (17191440).

Almost surely, 2^345762778 is an apocalyptic number.

345762778 is a deficient number, since it is larger than the sum of its proper divisors (204363302).

345762778 is a wasteful number, since it uses less digits than its factorization.

345762778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 982.

The product of its digits is 1975680, while the sum is 49.

The square root of 345762778 is about 18594.6975775354. The cubic root of 345762778 is about 701.8744171369.

The spelling of 345762778 in words is "three hundred forty-five million, seven hundred sixty-two thousand, seven hundred seventy-eight".