63890400 has 144 divisors (see below), whose sum is σ = 237734784. Its totient is φ = 14599680.

The previous prime is 63890371. The next prime is 63890417. The reversal of 63890400 is 409836.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14899 + ... + 18701.

It is an arithmetic number, because the mean of its divisors is an integer number (1650936).

Almost surely, 2^63890400 is an apocalyptic number.

63890400 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63890400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118867392).

63890400 is an abundant number, since it is smaller than the sum of its proper divisors (173844384).

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

63890400 is a wasteful number, since it uses less digits than its factorization.

63890400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3833 (or 3820 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 63890400 is about 7993.1470648300. The cubic root of 63890400 is about 399.7715362022.

The spelling of 63890400 in words is "sixty-three million, eight hundred ninety thousand, four hundred".