63840052 has 12 divisors (see below), whose sum is σ = 112764960. Its totient is φ = 31621496.

The previous prime is 63840013. The next prime is 63840071. The reversal of 63840052 is 25004836.

It is a self number, because there is not a number n which added to its sum of digits gives 63840052.

It is a congruent number.

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, 74152 + ... + 75007.

It is an arithmetic number, because the mean of its divisors is an integer number (9397080).

Almost surely, 2^63840052 is an apocalyptic number.

It is an amenable number.

63840052 is a deficient number, since it is larger than the sum of its proper divisors (48924908).

63840052 is a wasteful number, since it uses less digits than its factorization.

63840052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149270 (or 149268 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 63840052 is about 7989.9969962447. The cubic root of 63840052 is about 399.6664970167. Note that the first 3 decimals are identical.

Adding to 63840052 its reverse (25004836), we get a palindrome (88844888).

The spelling of 63840052 in words is "sixty-three million, eight hundred forty thousand, fifty-two".