396012728 has 8 divisors (see below), whose sum is σ = 742523880. Its totient is φ = 198006360.

The previous prime is 396012667. The next prime is 396012733. The reversal of 396012728 is 827210693.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 396012691 and 396012700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24750788 + ... + 24750803.

It is an arithmetic number, because the mean of its divisors is an integer number (92815485).

Almost surely, 2^396012728 is an apocalyptic number.

It is an amenable number.

396012728 is a deficient number, since it is larger than the sum of its proper divisors (346511152).

396012728 is a wasteful number, since it uses less digits than its factorization.

396012728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49501597 (or 49501593 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 396012728 is about 19900.0685425955. The cubic root of 396012728 is about 734.3499137180.

The spelling of 396012728 in words is "three hundred ninety-six million, twelve thousand, seven hundred twenty-eight".