8574128820 has 72 divisors (see below), whose sum is σ = 26195376480. Its totient is φ = 2269978560.

The previous prime is 8574128779. The next prime is 8574128839. The reversal of 8574128820 is 288214758.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 146326 + ... + 196365.

Almost surely, 2^8574128820 is an apocalyptic number.

It is an amenable number.

8574128820 is an abundant number, since it is smaller than the sum of its proper divisors (17621247660).

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

8574128820 is a wasteful number, since it uses less digits than its factorization.

8574128820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342845 (or 342840 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 45.

The square root of 8574128820 is about 92596.5918379289. The cubic root of 8574128820 is about 2046.7430988703.

The spelling of 8574128820 in words is "eight billion, five hundred seventy-four million, one hundred twenty-eight thousand, eight hundred twenty".