385331256 has 80 divisors (see below), whose sum is σ = 1104463800. Its totient is φ = 125447616.

The previous prime is 385331237. The next prime is 385331257. The reversal of 385331256 is 652133583.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 385331256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385331257) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 20950 + ... + 34778.

Almost surely, 2^385331256 is an apocalyptic number.

385331256 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 385331256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (552231900).

385331256 is an abundant number, since it is smaller than the sum of its proper divisors (719132544).

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

385331256 is a wasteful number, since it uses less digits than its factorization.

385331256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13890 (or 13877 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 385331256 is about 19629.8562399219. The cubic root of 385331256 is about 727.6872172010.

The spelling of 385331256 in words is "three hundred eighty-five million, three hundred thirty-one thousand, two hundred fifty-six".