889523280 has 60 divisors (see below), whose sum is σ = 2987318100. Its totient is φ = 237206016.

The previous prime is 889523267. The next prime is 889523339. The reversal of 889523280 is 82325988.

It can be written as a sum of positive squares in 2 ways, for example, as 643535424 + 245987856 = 25368^2 + 15684^2 .

It is a tau number, because it is divible by the number of its divisors (60).

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 11 ways as a sum of consecutive naturals, for example, 617005 + ... + 618444.

It is an arithmetic number, because the mean of its divisors is an integer number (49788635).

Almost surely, 2^889523280 is an apocalyptic number.

889523280 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

889523280 is an abundant number, since it is smaller than the sum of its proper divisors (2097794820).

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

889523280 is a wasteful number, since it uses less digits than its factorization.

889523280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235468 (or 1235459 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 889523280 is about 29824.8768647919. The cubic root of 889523280 is about 961.7283967208.

The spelling of 889523280 in words is "eight hundred eighty-nine million, five hundred twenty-three thousand, two hundred eighty".