63938240 has 28 divisors (see below), whose sum is σ = 152253696. Its totient is φ = 25575168.

The previous prime is 63938233. The next prime is 63938261. The reversal of 63938240 is 4283936.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 63938240.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99584 + ... + 100223.

It is an arithmetic number, because the mean of its divisors is an integer number (5437632).

Almost surely, 2^63938240 is an apocalyptic number.

It is an amenable number.

63938240 is an abundant number, since it is smaller than the sum of its proper divisors (88315456).

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

63938240 is a wasteful number, since it uses less digits than its factorization.

63938240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199824 (or 199814 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 63938240 is about 7996.1390683254. The cubic root of 63938240 is about 399.8712919234.

The spelling of 63938240 in words is "sixty-three million, nine hundred thirty-eight thousand, two hundred forty".