383666772 has 72 divisors (see below), whose sum is σ = 985401760. Its totient is φ = 115853760.

The previous prime is 383666741. The next prime is 383666809. The reversal of 383666772 is 277666383.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 119022 + ... + 122202.

Almost surely, 2^383666772 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 383666772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (492700880).

383666772 is an abundant number, since it is smaller than the sum of its proper divisors (601734988).

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

383666772 is a wasteful number, since it uses less digits than its factorization.

383666772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3253 (or 3228 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 48.

The square root of 383666772 is about 19587.4136118069. The cubic root of 383666772 is about 726.6379278630.

The spelling of 383666772 in words is "three hundred eighty-three million, six hundred sixty-six thousand, seven hundred seventy-two".