396209628 has 18 divisors (see below), whose sum is σ = 1001529984. Its totient is φ = 132069864.

The previous prime is 396209623. The next prime is 396209657. The reversal of 396209628 is 826902693.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396209621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5502876 + ... + 5502947.

Almost surely, 2^396209628 is an apocalyptic number.

It is an amenable number.

396209628 is an abundant number, since it is smaller than the sum of its proper divisors (605320356).

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

396209628 is a wasteful number, since it uses less digits than its factorization.

396209628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11005833 (or 11005828 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 396209628 is about 19905.0151469422. The cubic root of 396209628 is about 734.4716013391.

The spelling of 396209628 in words is "three hundred ninety-six million, two hundred nine thousand, six hundred twenty-eight".