634392 has 80 divisors (see below), whose sum is σ = 1960200. Its totient is φ = 190080.

The previous prime is 634373. The next prime is 634397. The reversal of 634392 is 293436.

634392 is nontrivially palindromic in base 15.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 634392.

It is not an unprimeable number, because it can be changed into a prime (634397) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7084 + ... + 7172.

2⁶³⁴³⁹² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 634392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (980100).

634392 is an abundant number, since it is smaller than the sum of its proper divisors (1325808).

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

634392 is a wasteful number, since it uses less digits than its factorization.

634392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118 (or 105 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

The square root of 634392 is about 796.4872880342. The cubic root of 634392 is about 85.9249390126.

The spelling of 634392 in words is "six hundred thirty-four thousand, three hundred ninety-two".