382391646 has 64 divisors (see below), whose sum is σ = 955411968. Its totient is φ = 99335808.

The previous prime is 382391623. The next prime is 382391657. The reversal of 382391646 is 646193283.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 382391598 and 382391607.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31356 + ... + 41808.

It is an arithmetic number, because the mean of its divisors is an integer number (14928312).

Almost surely, 2^382391646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 382391646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (477705984).

382391646 is an abundant number, since it is smaller than the sum of its proper divisors (573020322).

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

382391646 is a wasteful number, since it uses less digits than its factorization.

382391646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10545.

The product of its digits is 186624, while the sum is 42.

The square root of 382391646 is about 19554.8368952543. The cubic root of 382391646 is about 725.8320346960.

The spelling of 382391646 in words is "three hundred eighty-two million, three hundred ninety-one thousand, six hundred forty-six".