382021812 has 96 divisors (see below), whose sum is σ = 1043400960. Its totient is φ = 120637440.

The previous prime is 382021811. The next prime is 382021813. The reversal of 382021812 is 218120283.

It is an interprime number because it is at equal distance from previous prime (382021811) and next prime (382021813).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (382021811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 280012 + ... + 281372.

It is an arithmetic number, because the mean of its divisors is an integer number (10868760).

Almost surely, 2^382021812 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 382021812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (521700480).

382021812 is an abundant number, since it is smaller than the sum of its proper divisors (661379148).

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

382021812 is a wasteful number, since it uses less digits than its factorization.

382021812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510 (or 1502 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 382021812 is about 19545.3782772296. The cubic root of 382021812 is about 725.5979605866.

The spelling of 382021812 in words is "three hundred eighty-two million, twenty-one thousand, eight hundred twelve".