385778730 has 32 divisors (see below), whose sum is σ = 926748864. Its totient is φ = 102776576.

The previous prime is 385778693. The next prime is 385778741. The reversal of 385778730 is 37877583.

It is a self number, because there is not a number n which added to its sum of digits gives 385778730.

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, 29362 + ... + 40418.

It is an arithmetic number, because the mean of its divisors is an integer number (28960902).

Almost surely, 2^385778730 is an apocalyptic number.

385778730 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

385778730 is an abundant number, since it is smaller than the sum of its proper divisors (540970134).

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

385778730 is a wasteful number, since it uses less digits than its factorization.

385778730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12230.

The product of its (nonzero) digits is 987840, while the sum is 48.

The square root of 385778730 is about 19641.2507239229. The cubic root of 385778730 is about 727.9687889147.

The spelling of 385778730 in words is "three hundred eighty-five million, seven hundred seventy-eight thousand, seven hundred thirty".