8447053428 has 72 divisors (see below), whose sum is σ = 23330099520. Its totient is φ = 2555679360.

The previous prime is 8447053411. The next prime is 8447053471. The reversal of 8447053428 is 8243507448.

It is a happy number.

8447053428 is a `hidden beast` number, since 8 + 44 + 70 + 534 + 2 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 239728 + ... + 272696.

It is an arithmetic number, because the mean of its divisors is an integer number (324029160).

Almost surely, 2^8447053428 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 8447053428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11665049760).

8447053428 is an abundant number, since it is smaller than the sum of its proper divisors (14883046092).

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

8447053428 is a wasteful number, since it uses less digits than its factorization.

8447053428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33637 (or 33632 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 45.

The square root of 8447053428 is about 91907.8529180178. The cubic root of 8447053428 is about 2036.5812779922.

The spelling of 8447053428 in words is "eight billion, four hundred forty-seven million, fifty-three thousand, four hundred twenty-eight".