633240 has 48 divisors (see below), whose sum is σ = 2059200. Its totient is φ = 168768.

The previous prime is 633221. The next prime is 633253. The reversal of 633240 is 42336.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

633240 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 in 11 ways as a sum of consecutive naturals, for example, 520 + ... + 1239.

It is an arithmetic number, because the mean of its divisors is an integer number (42900).

2⁶³³²⁴⁰ is an apocalyptic number.

633240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

633240 is an abundant number, since it is smaller than the sum of its proper divisors (1425960).

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

633240 is a wasteful number, since it uses less digits than its factorization.

633240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1776 (or 1769 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 633240 is about 795.7637840465. The cubic root of 633240 is about 85.8728967913.

Adding to 633240 its reverse (42336), we get a palindrome (675576).

The spelling of 633240 in words is "six hundred thirty-three thousand, two hundred forty".