8387134728 has 64 divisors (see below), whose sum is σ = 24251996160. Its totient is φ = 2367448896.

The previous prime is 8387134727. The next prime is 8387134733. The reversal of 8387134728 is 8274317838.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (8387134727) 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, 286800 + ... + 314687.

It is an arithmetic number, because the mean of its divisors is an integer number (378937440).

Almost surely, 2^8387134728 is an apocalyptic number.

It is an amenable number.

8387134728 is an abundant number, since it is smaller than the sum of its proper divisors (15864861432).

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

8387134728 is a wasteful number, since it uses less digits than its factorization.

8387134728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601586 (or 601582 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 51.

The square root of 8387134728 is about 91581.3011918918. The cubic root of 8387134728 is about 2031.7543884684.

The spelling of 8387134728 in words is "eight billion, three hundred eighty-seven million, one hundred thirty-four thousand, seven hundred twenty-eight".