289227776 has 66 divisors (see below), whose sum is σ = 599496702. Its totient is φ = 139386880.

The previous prime is 289227773. The next prime is 289227781. The reversal of 289227776 is 677722982.

It can be written as a sum of positive squares in only one way, i.e., 176358400 + 112869376 = 13280^2 + 10624^2 .

Its product of digits (1185408) is a multiple of the sum of its prime divisors (126).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289227773) 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, 3484631 + ... + 3484713.

Almost surely, 2^289227776 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 289227776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299748351).

289227776 is an abundant number, since it is smaller than the sum of its proper divisors (310268926).

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

289227776 is an frugal number, since it uses more digits than its factorization.

289227776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227 (or 126 counting only the distinct ones).

The product of its digits is 1185408, while the sum is 50.

The square root of 289227776 is about 17006.6979746216. The cubic root of 289227776 is about 661.3225515643.

The spelling of 289227776 in words is "two hundred eighty-nine million, two hundred twenty-seven thousand, seven hundred seventy-six".