289229670 has 128 divisors (see below), whose sum is σ = 830839680. Its totient is φ = 71331840.

The previous prime is 289229641. The next prime is 289229683. The reversal of 289229670 is 76922982.

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 63 ways as a sum of consecutive naturals, for example, 279474 + ... + 280506.

It is an arithmetic number, because the mean of its divisors is an integer number (6490935).

Almost surely, 2^289229670 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 289229670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (415419840).

289229670 is an abundant number, since it is smaller than the sum of its proper divisors (541610010).

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

289229670 is a wasteful number, since it uses less digits than its factorization.

289229670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1127 (or 1121 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 289229670 is about 17006.7536584734. The cubic root of 289229670 is about 661.3239951119.

The spelling of 289229670 in words is "two hundred eighty-nine million, two hundred twenty-nine thousand, six hundred seventy".