385790778 has 12 divisors (see below), whose sum is σ = 835880058. Its totient is φ = 128596920.

The previous prime is 385790773. The next prime is 385790789. The reversal of 385790778 is 877097583.

It can be written as a sum of positive squares in only one way, i.e., 312122889 + 73667889 = 17667^2 + 8583^2 .

It is not an unprimeable number, because it can be changed into a prime (385790773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10716393 + ... + 10716428.

Almost surely, 2^385790778 is an apocalyptic number.

385790778 is an abundant number, since it is smaller than the sum of its proper divisors (450089280).

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

385790778 is a wasteful number, since it uses less digits than its factorization.

385790778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21432829 (or 21432826 counting only the distinct ones).

The product of its (nonzero) digits is 2963520, while the sum is 54.

The square root of 385790778 is about 19641.5574229744. The cubic root of 385790778 is about 727.9763670729.

The spelling of 385790778 in words is "three hundred eighty-five million, seven hundred ninety thousand, seven hundred seventy-eight".