403628 has 6 divisors (see below), whose sum is σ = 706356. Its totient is φ = 201812.

The previous prime is 403621. The next prime is 403649. The reversal of 403628 is 826304.

It is a happy number.

403628 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 403628.

It is not an unprimeable number, because it can be changed into a prime (403621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50450 + ... + 50457.

It is an arithmetic number, because the mean of its divisors is an integer number (117726).

2⁴⁰³⁶²⁸ is an apocalyptic number.

It is an amenable number.

403628 is a deficient number, since it is larger than the sum of its proper divisors (302728).

403628 is a wasteful number, since it uses less digits than its factorization.

403628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100911 (or 100909 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 403628 is about 635.3172435878. The cubic root of 403628 is about 73.9027209696.

Adding to 403628 its sum of digits (23), we get a triangular number (403651 = T₈₉₈).

The spelling of 403628 in words is "four hundred three thousand, six hundred twenty-eight".