396484742256 has 80 divisors (see below), whose sum is σ = 1061285347200. Its totient is φ = 127397862144.

The previous prime is 396484742239. The next prime is 396484742257. The reversal of 396484742256 is 652247484693.

It is a happy number.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 396484742256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396484742257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 631575 + ... + 1091721.

It is an arithmetic number, because the mean of its divisors is an integer number (13266066840).

Almost surely, 2^396484742256 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 396484742256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (530642673600).

396484742256 is an abundant number, since it is smaller than the sum of its proper divisors (664800604944).

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

396484742256 is a wasteful number, since it uses less digits than its factorization.

396484742256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460806 (or 460800 counting only the distinct ones).

The product of its digits is 69672960, while the sum is 60.

The spelling of 396484742256 in words is "three hundred ninety-six billion, four hundred eighty-four million, seven hundred forty-two thousand, two hundred fifty-six".