397782 has 72 divisors (see below), whose sum is σ = 1120392. Its totient is φ = 100800.

The previous prime is 397763. The next prime is 397799. The reversal of 397782 is 287793.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 397782.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9682 + ... + 9722.

It is an arithmetic number, because the mean of its divisors is an integer number (15561).

2³⁹⁷⁷⁸² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397782, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (560196).

397782 is an abundant number, since it is smaller than the sum of its proper divisors (722610).

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

397782 is a wasteful number, since it uses less digits than its factorization.

397782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74 (or 64 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 397782 is about 630.6996115426. The cubic root of 397782 is about 73.5441911123.

The spelling of 397782 in words is "three hundred ninety-seven thousand, seven hundred eighty-two".