396780 has 48 divisors (see below), whose sum is σ = 1179360. Its totient is φ = 99328.

The previous prime is 396733. The next prime is 396833. The reversal of 396780 is 87693.

It is a happy number.

396780 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 826 + ... + 1214.

It is an arithmetic number, because the mean of its divisors is an integer number (24570).

2³⁹⁶⁷⁸⁰ is an apocalyptic number.

396780 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 396780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (589680).

396780 is an abundant number, since it is smaller than the sum of its proper divisors (782580).

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

396780 is a wasteful number, since it uses less digits than its factorization.

396780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418 (or 416 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 396780 is about 629.9047547050. The cubic root of 396780 is about 73.4823873760.

It can be divided in two parts, 396 and 780, that added together give a triangular number (1176 = T₄₈).

The spelling of 396780 in words is "three hundred ninety-six thousand, seven hundred eighty".