63820338 has 32 divisors (see below), whose sum is σ = 132969600. Its totient is φ = 20401920.

The previous prime is 63820333. The next prime is 63820357. The reversal of 63820338 is 83302836.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 63820299 and 63820308.

It is not an unprimeable number, because it can be changed into a prime (63820333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13738 + ... + 17786.

It is an arithmetic number, because the mean of its divisors is an integer number (4155300).

Almost surely, 2^63820338 is an apocalyptic number.

63820338 is an abundant number, since it is smaller than the sum of its proper divisors (69149262).

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

63820338 is a wasteful number, since it uses less digits than its factorization.

63820338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4162.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 63820338 is about 7988.7632334423. The cubic root of 63820338 is about 399.6253533760.

The spelling of 63820338 in words is "sixty-three million, eight hundred twenty thousand, three hundred thirty-eight".