382821740 has 24 divisors (see below), whose sum is σ = 918772512. Its totient is φ = 131253120.

The previous prime is 382821727. The next prime is 382821749. The reversal of 382821740 is 47128283.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 382821740.

It is not an unprimeable number, because it can be changed into a prime (382821749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1367081 + ... + 1367360.

It is an arithmetic number, because the mean of its divisors is an integer number (38282188).

Almost surely, 2^382821740 is an apocalyptic number.

It is an amenable number.

382821740 is an abundant number, since it is smaller than the sum of its proper divisors (535950772).

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

382821740 is a wasteful number, since it uses less digits than its factorization.

382821740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2734457 (or 2734455 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 382821740 is about 19565.8309304767. The cubic root of 382821740 is about 726.1040586273.

The spelling of 382821740 in words is "three hundred eighty-two million, eight hundred twenty-one thousand, seven hundred forty".