63800440 has 64 divisors (see below), whose sum is σ = 158578560. Its totient is φ = 22907520.

The previous prime is 63800431. The next prime is 63800441. The reversal of 63800440 is 4400836.

63800440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×63800440² = 8140992288387200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63800441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35647 + ... + 37393.

It is an arithmetic number, because the mean of its divisors is an integer number (2477790).

Almost surely, 2^63800440 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 63800440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79289280).

63800440 is an abundant number, since it is smaller than the sum of its proper divisors (94778120).

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

63800440 is a wasteful number, since it uses less digits than its factorization.

63800440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1852 (or 1848 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 63800440 is about 7987.5177621086. The cubic root of 63800440 is about 399.5838171297.

The spelling of 63800440 in words is "sixty-three million, eight hundred thousand, four hundred forty".