889702928640 has 288 divisors, whose sum is σ = 3159358473600. Its totient is φ = 237092659200.

The previous prime is 889702928593. The next prime is 889702928707. The reversal of 889702928640 is 46829207988.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55944690 + ... + 55960590.

It is an arithmetic number, because the mean of its divisors is an integer number (10969994700).

Almost surely, 2^889702928640 is an apocalyptic number.

889702928640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 889702928640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1579679236800).

889702928640 is an abundant number, since it is smaller than the sum of its proper divisors (2269655544960).

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

889702928640 is a wasteful number, since it uses less digits than its factorization.

889702928640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17550 (or 17530 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 63.

The spelling of 889702928640 in words is "eight hundred eighty-nine billion, seven hundred two million, nine hundred twenty-eight thousand, six hundred forty".