289427740 has 48 divisors (see below), whose sum is σ = 699277824. Its totient is φ = 98568000.

The previous prime is 289427731. The next prime is 289427767. The reversal of 289427740 is 47724982.

It is a super-3 number, since 3×289427740³ (a number of 26 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14295 + ... + 27985.

It is an arithmetic number, because the mean of its divisors is an integer number (14568288).

Almost surely, 2^289427740 is an apocalyptic number.

289427740 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 289427740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (349638912).

289427740 is an abundant number, since it is smaller than the sum of its proper divisors (409850084).

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

289427740 is a wasteful number, since it uses less digits than its factorization.

289427740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13858 (or 13856 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 43.

The square root of 289427740 is about 17012.5759366417. The cubic root of 289427740 is about 661.4749230970.

The spelling of 289427740 in words is "two hundred eighty-nine million, four hundred twenty-seven thousand, seven hundred forty".