63391248 has 100 divisors (see below), whose sum is σ = 188105148. Its totient is φ = 20597760.

The previous prime is 63391231. The next prime is 63391253. The reversal of 63391248 is 84219336.

63391248 is a `hidden beast` number, since 633 + 9 + 12 + 4 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 15116544 + 48274704 = 3888^2 + 6948^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 52540 + ... + 53732.

Almost surely, 2^63391248 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 63391248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94052574).

63391248 is an abundant number, since it is smaller than the sum of its proper divisors (124713900).

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

63391248 is a wasteful number, since it uses less digits than its factorization.

63391248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254 (or 1239 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 63391248 is about 7961.8620937567. The cubic root of 63391248 is about 398.7277242431.

The spelling of 63391248 in words is "sixty-three million, three hundred ninety-one thousand, two hundred forty-eight".