289658380 has 96 divisors (see below), whose sum is σ = 696003840. Its totient is φ = 100289280.

The previous prime is 289658371. The next prime is 289658387. The reversal of 289658380 is 83856982.

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 not an unprimeable number, because it can be changed into a prime (289658387) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 529267 + ... + 529813.

It is an arithmetic number, because the mean of its divisors is an integer number (7250040).

Almost surely, 2^289658380 is an apocalyptic number.

289658380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 289658380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (348001920).

289658380 is an abundant number, since it is smaller than the sum of its proper divisors (406345460).

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

289658380 is a wasteful number, since it uses less digits than its factorization.

289658380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679 (or 677 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 49.

The square root of 289658380 is about 17019.3531016899. The cubic root of 289658380 is about 661.6505824508.

The spelling of 289658380 in words is "two hundred eighty-nine million, six hundred fifty-eight thousand, three hundred eighty".