873493128 has 24 divisors (see below), whose sum is σ = 2365710750. Its totient is φ = 291164352.

The previous prime is 873493123. The next prime is 873493129. The reversal of 873493128 is 821394378.

It can be written as a sum of positive squares in only one way, i.e., 720278244 + 153214884 = 26838^2 + 12378^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-3 number, since 3×873493128³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (873493123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6065853 + ... + 6065996.

Almost surely, 2^873493128 is an apocalyptic number.

It is an amenable number.

873493128 is an abundant number, since it is smaller than the sum of its proper divisors (1492217622).

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

873493128 is a wasteful number, since it uses less digits than its factorization.

873493128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12131861 (or 12131854 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 873493128 is about 29554.9171543417. The cubic root of 873493128 is about 955.9162201985.

The spelling of 873493128 in words is "eight hundred seventy-three million, four hundred ninety-three thousand, one hundred twenty-eight".