63138460 has 72 divisors (see below), whose sum is σ = 168288624. Its totient is φ = 19676160.

The previous prime is 63138457. The next prime is 63138479. The reversal of 63138460 is 6483136.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7852 + ... + 13708.

It is an arithmetic number, because the mean of its divisors is an integer number (2337342).

Almost surely, 2^63138460 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 63138460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84144312).

63138460 is an abundant number, since it is smaller than the sum of its proper divisors (105150164).

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

63138460 is a wasteful number, since it uses less digits than its factorization.

63138460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5891 (or 5882 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 63138460 is about 7945.9713062658. The cubic root of 63138460 is about 398.1970102808.

The spelling of 63138460 in words is "sixty-three million, one hundred thirty-eight thousand, four hundred sixty".