384011856 has 30 divisors (see below), whose sum is σ = 1074700250. Its totient is φ = 128003904.

The previous prime is 384011843. The next prime is 384011857. The reversal of 384011856 is 658110483.

It can be written as a sum of positive squares in only one way, i.e., 360392256 + 23619600 = 18984^2 + 4860^2 .

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

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 384011856.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384011857) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1333231 + ... + 1333518.

Almost surely, 2^384011856 is an apocalyptic number.

384011856 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

384011856 is an abundant number, since it is smaller than the sum of its proper divisors (690688394).

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

384011856 is a wasteful number, since it uses less digits than its factorization.

384011856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2666763 (or 2666754 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 384011856 is about 19596.2204519137. The cubic root of 384011856 is about 726.8557175356.

The spelling of 384011856 in words is "three hundred eighty-four million, eleven thousand, eight hundred fifty-six".