385780004 has 48 divisors (see below), whose sum is σ = 712514880. Its totient is φ = 182582400.

The previous prime is 385780001. The next prime is 385780039. The reversal of 385780004 is 400087583.

It is a super-2 number, since 2×385780004² = 297652422972480032, which contains 22 as substring.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (385780001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 920507 + ... + 920925.

It is an arithmetic number, because the mean of its divisors is an integer number (14844060).

Almost surely, 2^385780004 is an apocalyptic number.

It is an amenable number.

385780004 is a deficient number, since it is larger than the sum of its proper divisors (326734876).

385780004 is a wasteful number, since it uses less digits than its factorization.

385780004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620 (or 618 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 385780004 is about 19641.2831556393. The cubic root of 385780004 is about 727.9695902646.

The spelling of 385780004 in words is "three hundred eighty-five million, seven hundred eighty thousand, four".