385323690 has 32 divisors (see below), whose sum is σ = 940455360. Its totient is φ = 101010944.

The previous prime is 385323643. The next prime is 385323703. The reversal of 385323690 is 96323583.

It is a super-2 number, since 2×385323690² = 296948692150432200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107079 + ... + 110618.

It is an arithmetic number, because the mean of its divisors is an integer number (29389230).

Almost surely, 2^385323690 is an apocalyptic number.

385323690 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

385323690 is an abundant number, since it is smaller than the sum of its proper divisors (555131670).

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

385323690 is a wasteful number, since it uses less digits than its factorization.

385323690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217766.

The product of its (nonzero) digits is 116640, while the sum is 39.

The square root of 385323690 is about 19629.6635223327. The cubic root of 385323690 is about 727.6824544439.

The spelling of 385323690 in words is "three hundred eighty-five million, three hundred twenty-three thousand, six hundred ninety".