385731120 has 80 divisors (see below), whose sum is σ = 1207681632. Its totient is φ = 101836800.

The previous prime is 385731097. The next prime is 385731133. The reversal of 385731120 is 21137583.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16284 + ... + 32196.

Almost surely, 2^385731120 is an apocalyptic number.

385731120 is a gapful number since it is divisible by the number (30) 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 385731120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (603840816).

385731120 is an abundant number, since it is smaller than the sum of its proper divisors (821950512).

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

385731120 is a wasteful number, since it uses less digits than its factorization.

385731120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16030 (or 16024 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 385731120 is about 19640.0386964996. The cubic root of 385731120 is about 727.9388408148.

It can be divided in two parts, 38573 and 1120, that added together give a palindrome (39693).

The spelling of 385731120 in words is "three hundred eighty-five million, seven hundred thirty-one thousand, one hundred twenty".