889728172 has 24 divisors (see below), whose sum is σ = 1589078736. Its totient is φ = 435734208.

The previous prime is 889728163. The next prime is 889728173. The reversal of 889728172 is 271827988.

It is a super-3 number, since 3×889728172³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (889728173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135223 + ... + 141649.

It is an arithmetic number, because the mean of its divisors is an integer number (66211614).

Almost surely, 2^889728172 is an apocalyptic number.

It is an amenable number.

889728172 is a deficient number, since it is larger than the sum of its proper divisors (699350564).

889728172 is a wasteful number, since it uses less digits than its factorization.

889728172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7137 (or 7135 counting only the distinct ones).

The product of its digits is 903168, while the sum is 52.

The square root of 889728172 is about 29828.3115848014. The cubic root of 889728172 is about 961.8022322728.

The spelling of 889728172 in words is "eight hundred eighty-nine million, seven hundred twenty-eight thousand, one hundred seventy-two".