63128138 has 8 divisors (see below), whose sum is σ = 94729440. Its totient is φ = 31551660.

The previous prime is 63128129. The next prime is 63128147. The reversal of 63128138 is 83182136.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (63128129) and next prime (63128147).

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2723 + ... + 11561.

It is an arithmetic number, because the mean of its divisors is an integer number (11841180).

Almost surely, 2^63128138 is an apocalyptic number.

63128138 is a deficient number, since it is larger than the sum of its proper divisors (31601302).

63128138 is a wasteful number, since it uses less digits than its factorization.

63128138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12412.

The product of its digits is 6912, while the sum is 32.

The square root of 63128138 is about 7945.3217681854. The cubic root of 63128138 is about 398.1753097540.

The spelling of 63128138 in words is "sixty-three million, one hundred twenty-eight thousand, one hundred thirty-eight".