396261856 has 48 divisors (see below), whose sum is σ = 811541808. Its totient is φ = 190310400.

The previous prime is 396261839. The next prime is 396261881. The reversal of 396261856 is 658162693.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81576 + ... + 86296.

It is an arithmetic number, because the mean of its divisors is an integer number (16907121).

Almost surely, 2^396261856 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 396261856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (405770904).

396261856 is an abundant number, since it is smaller than the sum of its proper divisors (415279952).

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

396261856 is a wasteful number, since it uses less digits than its factorization.

396261856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4835 (or 4827 counting only the distinct ones).

The product of its digits is 466560, while the sum is 46.

The square root of 396261856 is about 19906.3270343878. The cubic root of 396261856 is about 734.5038723851.

The spelling of 396261856 in words is "three hundred ninety-six million, two hundred sixty-one thousand, eight hundred fifty-six".