383605656 has 128 divisors (see below), whose sum is σ = 1148006400. Its totient is φ = 104509440.

The previous prime is 383605643. The next prime is 383605693. The reversal of 383605656 is 656506383.

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

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, 379680 + ... + 380688.

It is an arithmetic number, because the mean of its divisors is an integer number (8968800).

Almost surely, 2^383605656 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 383605656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (574003200).

383605656 is an abundant number, since it is smaller than the sum of its proper divisors (764400744).

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

383605656 is a wasteful number, since it uses less digits than its factorization.

383605656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1129 (or 1125 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 42.

The square root of 383605656 is about 19585.8534662138. The cubic root of 383605656 is about 726.5993426765.

The spelling of 383605656 in words is "three hundred eighty-three million, six hundred five thousand, six hundred fifty-six".