633428 has 6 divisors (see below), whose sum is σ = 1108506. Its totient is φ = 316712.

The previous prime is 633427. The next prime is 633449. The reversal of 633428 is 824336.

It can be written as a sum of positive squares in only one way, i.e., 611524 + 21904 = 782^2 + 148^2 .

It is a junction number, because it is equal to n+sod(n) for n = 633397 and 633406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (633427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79175 + ... + 79182.

It is an arithmetic number, because the mean of its divisors is an integer number (184751).

2⁶³³⁴²⁸ is an apocalyptic number.

It is an amenable number.

633428 is a deficient number, since it is larger than the sum of its proper divisors (475078).

633428 is a wasteful number, since it uses less digits than its factorization.

633428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158361 (or 158359 counting only the distinct ones).

The product of its digits is 3456, while the sum is 26.

The square root of 633428 is about 795.8819007868. The cubic root of 633428 is about 85.8813941000.

The spelling of 633428 in words is "six hundred thirty-three thousand, four hundred twenty-eight".