385578 has 24 divisors (see below), whose sum is σ = 863616. Its totient is φ = 124200.

The previous prime is 385573. The next prime is 385579. The reversal of 385578 is 875583.

It is a happy number.

385578 is a `hidden beast` number, since 3 + 85 + 578 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385571) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 213 + ... + 903.

It is an arithmetic number, because the mean of its divisors is an integer number (35984).

2³⁸⁵⁵⁷⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 385578, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (431808).

385578 is an abundant number, since it is smaller than the sum of its proper divisors (478038).

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

385578 is a wasteful number, since it uses less digits than its factorization.

385578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730 (or 727 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 385578 is about 620.9492732905. The cubic root of 385578 is about 72.7842507089.

The spelling of 385578 in words is "three hundred eighty-five thousand, five hundred seventy-eight".