382217820 has 48 divisors (see below), whose sum is σ = 1073335200. Its totient is φ = 101627136.

The previous prime is 382217789. The next prime is 382217827. The reversal of 382217820 is 28712283.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (382217827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11814 + ... + 30066.

It is an arithmetic number, because the mean of its divisors is an integer number (22361150).

Almost surely, 2^382217820 is an apocalyptic number.

382217820 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

382217820 is an abundant number, since it is smaller than the sum of its proper divisors (691117380).

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

382217820 is a wasteful number, since it uses less digits than its factorization.

382217820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18614 (or 18612 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 382217820 is about 19550.3918119305. The cubic root of 382217820 is about 725.7220361268.

The spelling of 382217820 in words is "three hundred eighty-two million, two hundred seventeen thousand, eight hundred twenty".