289442500 has 30 divisors (see below), whose sum is σ = 632958326. Its totient is φ = 115776000.

The previous prime is 289442473. The next prime is 289442501. The reversal of 289442500 is 5244982.

It can be written as a sum of positive squares in 5 ways, for example, as 179989056 + 109453444 = 13416^2 + 10462^2 .

It is not an unprimeable number, because it can be changed into a prime (289442501) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 55389 + ... + 60388.

Almost surely, 2^289442500 is an apocalyptic number.

289442500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

289442500 is an abundant number, since it is smaller than the sum of its proper divisors (343515826).

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

289442500 is a wasteful number, since it uses less digits than its factorization.

289442500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115801 (or 115784 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 289442500 is about 17013.0097278524. The cubic root of 289442500 is about 661.4861673588.

The spelling of 289442500 in words is "two hundred eighty-nine million, four hundred forty-two thousand, five hundred".