8449728732 has 48 divisors (see below), whose sum is σ = 22320053280. Its totient is φ = 2763431424.

The previous prime is 8449728691. The next prime is 8449728737. The reversal of 8449728732 is 2378279448.

It is a happy number.

8449728732 is a `hidden beast` number, since 84 + 497 + 2 + 8 + 73 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8449728737) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 732373 + ... + 743820.

It is an arithmetic number, because the mean of its divisors is an integer number (465001110).

Almost surely, 2^8449728732 is an apocalyptic number.

It is an amenable number.

8449728732 is an abundant number, since it is smaller than the sum of its proper divisors (13870324548).

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

8449728732 is a wasteful number, since it uses less digits than its factorization.

8449728732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1476259 (or 1476251 counting only the distinct ones).

The product of its digits is 5419008, while the sum is 54.

The square root of 8449728732 is about 91922.4060390066. The cubic root of 8449728732 is about 2036.7962602138.

The spelling of 8449728732 in words is "eight billion, four hundred forty-nine million, seven hundred twenty-eight thousand, seven hundred thirty-two".