633438 has 24 divisors (see below), whose sum is σ = 1478568. Its totient is φ = 194832.

The previous prime is 633427. The next prime is 633449. The reversal of 633438 is 834336.

It is an interprime number because it is at equal distance from previous prime (633427) and next prime (633449).

It is a congruent number.

It is an unprimeable number.

633438 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1120 + ... + 1587.

It is an arithmetic number, because the mean of its divisors is an integer number (61607).

2⁶³³⁴³⁸ is an apocalyptic number.

633438 is an abundant number, since it is smaller than the sum of its proper divisors (845130).

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

633438 is a wasteful number, since it uses less digits than its factorization.

633438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2728 (or 2725 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 633438 is about 795.8881831011. Note that the first 3 decimals coincide. The cubic root of 633438 is about 85.8818460374.

The spelling of 633438 in words is "six hundred thirty-three thousand, four hundred thirty-eight".