396020 has 12 divisors (see below), whose sum is σ = 831684. Its totient is φ = 158400.

The previous prime is 396001. The next prime is 396029. The reversal of 396020 is 20693.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 40804 + 355216 = 202^2 + 596^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 19801 = 396020 / (3 + 9 + 6 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 395983 and 396001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396029) by changing a digit.

396020 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9881 + ... + 9920.

It is an arithmetic number, because the mean of its divisors is an integer number (69307).

2³⁹⁶⁰²⁰ is an apocalyptic number.

It is an amenable number.

396020 is an abundant number, since it is smaller than the sum of its proper divisors (435664).

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

396020 is a wasteful number, since it uses less digits than its factorization.

396020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19810 (or 19808 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 396020 is about 629.3011997446. The cubic root of 396020 is about 73.4354408658.

The spelling of 396020 in words is "three hundred ninety-six thousand, twenty".