403828 has 6 divisors (see below), whose sum is σ = 706706. Its totient is φ = 201912.

The previous prime is 403817. The next prime is 403829. The reversal of 403828 is 828304.

It can be written as a sum of positive squares in only one way, i.e., 381924 + 21904 = 618^2 + 148^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403829) by changing a digit.

403828 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50475 + ... + 50482.

2⁴⁰³⁸²⁸ is an apocalyptic number.

It is an amenable number.

403828 is a deficient number, since it is larger than the sum of its proper divisors (302878).

403828 is a wasteful number, since it uses less digits than its factorization.

403828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100961 (or 100959 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 403828 is about 635.4746257720. The cubic root of 403828 is about 73.9149253620.

The spelling of 403828 in words is "four hundred three thousand, eight hundred twenty-eight".