393628 has 6 divisors (see below), whose sum is σ = 688856. Its totient is φ = 196812.

The previous prime is 393611. The next prime is 393629. The reversal of 393628 is 826393.

It is a happy number.

It is an Ulam number.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 393628.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49200 + ... + 49207.

2³⁹³⁶²⁸ is an apocalyptic number.

It is an amenable number.

393628 is a deficient number, since it is larger than the sum of its proper divisors (295228).

393628 is a wasteful number, since it uses less digits than its factorization.

393628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98411 (or 98409 counting only the distinct ones).

The product of its digits is 7776, while the sum is 31.

The square root of 393628 is about 627.3978004424. The cubic root of 393628 is about 73.2872897377.

The spelling of 393628 in words is "three hundred ninety-three thousand, six hundred twenty-eight".