634402132 has 48 divisors (see below), whose sum is σ = 1379752192. Its totient is φ = 248520960.

The previous prime is 634402129. The next prime is 634402151. The reversal of 634402132 is 231204436.

It is a super-2 number, since 2×634402132² = 804932130172290848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 634402097 and 634402106.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29032 + ... + 45952.

Almost surely, 2^634402132 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 634402132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (689876096).

634402132 is an abundant number, since it is smaller than the sum of its proper divisors (745350060).

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

634402132 is a wasteful number, since it uses less digits than its factorization.

634402132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17048 (or 17046 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 634402132 is about 25187.3407091737. The cubic root of 634402132 is about 859.2539645157.

Adding to 634402132 its reverse (231204436), we get a palindrome (865606568).

The spelling of 634402132 in words is "six hundred thirty-four million, four hundred two thousand, one hundred thirty-two".