289494480 has 160 divisors (see below), whose sum is σ = 997971840. Its totient is φ = 68823040.

The previous prime is 289494467. The next prime is 289494487. The reversal of 289494480 is 84494982.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289494487) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 138886 + ... + 140954.

It is an arithmetic number, because the mean of its divisors is an integer number (6237324).

Almost surely, 2^289494480 is an apocalyptic number.

289494480 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 289494480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (498985920).

289494480 is an abundant number, since it is smaller than the sum of its proper divisors (708477360).

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

289494480 is a wasteful number, since it uses less digits than its factorization.

289494480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2149 (or 2143 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 48.

The square root of 289494480 is about 17014.5373137209. The cubic root of 289494480 is about 661.5257630101.

The spelling of 289494480 in words is "two hundred eighty-nine million, four hundred ninety-four thousand, four hundred eighty".