289446224 has 20 divisors (see below), whose sum is σ = 574481460. Its totient is φ = 141192960.

The previous prime is 289446221. The next prime is 289446229. The reversal of 289446224 is 422644982.

It can be written as a sum of positive squares in 2 ways, for example, as 9486400 + 279959824 = 3080^2 + 16732^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289446221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219959 + ... + 221270.

It is an arithmetic number, because the mean of its divisors is an integer number (28724073).

Almost surely, 2^289446224 is an apocalyptic number.

It is an amenable number.

289446224 is a deficient number, since it is larger than the sum of its proper divisors (285035236).

289446224 is a wasteful number, since it uses less digits than its factorization.

289446224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441278 (or 441272 counting only the distinct ones).

The product of its digits is 221184, while the sum is 41.

The square root of 289446224 is about 17013.1191731558. The cubic root of 289446224 is about 661.4890042653.

It can be divided in two parts, 289 and 446224, that multiplied together give a square (128958736 = 11356²).

The spelling of 289446224 in words is "two hundred eighty-nine million, four hundred forty-six thousand, two hundred twenty-four".