638614232 has 16 divisors (see below), whose sum is σ = 1198228200. Its totient is φ = 319086720.

The previous prime is 638614219. The next prime is 638614259. The reversal of 638614232 is 232416836.

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 638614192 and 638614201.

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 3 ways as a sum of consecutive naturals, for example, 14894 + ... + 38717.

Almost surely, 2^638614232 is an apocalyptic number.

It is an amenable number.

638614232 is a deficient number, since it is larger than the sum of its proper divisors (559613968).

638614232 is a wasteful number, since it uses less digits than its factorization.

638614232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55106 (or 55102 counting only the distinct ones).

The product of its digits is 41472, while the sum is 35.

The square root of 638614232 is about 25270.8177944442. The cubic root of 638614232 is about 861.1514376631.

The spelling of 638614232 in words is "six hundred thirty-eight million, six hundred fourteen thousand, two hundred thirty-two".