289446556 has 48 divisors (see below), whose sum is σ = 618782976. Its totient is φ = 115640064.

The previous prime is 289446541. The next prime is 289446569. The reversal of 289446556 is 655644982.

289446556 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×289446556² = 167558617560522272, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48091 + ... + 53773.

It is an arithmetic number, because the mean of its divisors is an integer number (12891312).

Almost surely, 2^289446556 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 289446556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309391488).

289446556 is an abundant number, since it is smaller than the sum of its proper divisors (329336420).

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

289446556 is a wasteful number, since it uses less digits than its factorization.

289446556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5818 (or 5816 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 49.

The square root of 289446556 is about 17013.1289303291. The cubic root of 289446556 is about 661.4892571785.

The spelling of 289446556 in words is "two hundred eighty-nine million, four hundred forty-six thousand, five hundred fifty-six".