396278860 has 12 divisors (see below), whose sum is σ = 832185648. Its totient is φ = 158511536.

The previous prime is 396278791. The next prime is 396278879. The reversal of 396278860 is 68872693.

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 3 ways as a sum of consecutive naturals, for example, 9906952 + ... + 9906991.

It is an arithmetic number, because the mean of its divisors is an integer number (69348804).

Almost surely, 2^396278860 is an apocalyptic number.

It is an amenable number.

396278860 is an abundant number, since it is smaller than the sum of its proper divisors (435906788).

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

396278860 is a wasteful number, since it uses less digits than its factorization.

396278860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19813952 (or 19813950 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 49.

The square root of 396278860 is about 19906.7541301941. The cubic root of 396278860 is about 734.5143783380.

The spelling of 396278860 in words is "three hundred ninety-six million, two hundred seventy-eight thousand, eight hundred sixty".