63841428 has 144 divisors (see below), whose sum is σ = 195197184. Its totient is φ = 17210880.

The previous prime is 63841397. The next prime is 63841429. The reversal of 63841428 is 82414836.

63841428 is a `hidden beast` number, since 638 + 4 + 14 + 2 + 8 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 63841392 and 63841401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63841429) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 382201 + ... + 382367.

It is an arithmetic number, because the mean of its divisors is an integer number (1355536).

Almost surely, 2^63841428 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 63841428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97598592).

63841428 is an abundant number, since it is smaller than the sum of its proper divisors (131355756).

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

63841428 is a wasteful number, since it uses less digits than its factorization.

63841428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262 (or 257 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 63841428 is about 7990.0831034477. The cubic root of 63841428 is about 399.6693684489.

The spelling of 63841428 in words is "sixty-three million, eight hundred forty-one thousand, four hundred twenty-eight".