385508004 has 48 divisors (see below), whose sum is σ = 1033804800. Its totient is φ = 109525536.

The previous prime is 385507981. The next prime is 385508009. The reversal of 385508004 is 400805583.

It is a happy number.

It is a super-2 number, since 2×385508004² = 297232842296128032, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (385508009) 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, 2217 + ... + 27855.

It is an arithmetic number, because the mean of its divisors is an integer number (21537600).

Almost surely, 2^385508004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 385508004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (516902400).

385508004 is an abundant number, since it is smaller than the sum of its proper divisors (648296796).

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

385508004 is a wasteful number, since it uses less digits than its factorization.

385508004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25832 (or 25830 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 385508004 is about 19634.3577435067. The cubic root of 385508004 is about 727.7984613994.

The spelling of 385508004 in words is "three hundred eighty-five million, five hundred eight thousand, four".