63401280 has 112 divisors (see below), whose sum is σ = 202899264. Its totient is φ = 16773120.

The previous prime is 63401257. The next prime is 63401287. The reversal of 63401280 is 8210436.

It is a happy number.

63401280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 63401280.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63401287) 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, 202404 + ... + 202716.

Almost surely, 2^63401280 is an apocalyptic number.

63401280 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 63401280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101449632).

63401280 is an abundant number, since it is smaller than the sum of its proper divisors (139497984).

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

63401280 is a wasteful number, since it uses less digits than its factorization.

63401280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544 (or 534 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 63401280 is about 7962.4920722096. The cubic root of 63401280 is about 398.7487567235.

The spelling of 63401280 in words is "sixty-three million, four hundred one thousand, two hundred eighty".