396807128 has 16 divisors (see below), whose sum is σ = 744552000. Its totient is φ = 198259936.

The previous prime is 396807127. The next prime is 396807137. The reversal of 396807128 is 821708693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396807127) by changing a digit.

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, 5723 + ... + 28746.

It is an arithmetic number, because the mean of its divisors is an integer number (46534500).

Almost surely, 2^396807128 is an apocalyptic number.

It is an amenable number.

396807128 is a deficient number, since it is larger than the sum of its proper divisors (347744872).

396807128 is a wasteful number, since it uses less digits than its factorization.

396807128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35914 (or 35910 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 396807128 is about 19920.0182730840. The cubic root of 396807128 is about 734.8406201075.

The spelling of 396807128 in words is "three hundred ninety-six million, eight hundred seven thousand, one hundred twenty-eight".