289200320 has 28 divisors (see below), whose sum is σ = 688659024. Its totient is φ = 115680000.

The previous prime is 289200319. The next prime is 289200361. The reversal of 289200320 is 23002982.

It is a self number, because there is not a number n which added to its sum of digits gives 289200320.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 451556 + ... + 452195.

Almost surely, 2^289200320 is an apocalyptic number.

289200320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

289200320 is an abundant number, since it is smaller than the sum of its proper divisors (399458704).

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

289200320 is an equidigital number, since it uses as much as digits as its factorization.

289200320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903768 (or 903758 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 289200320 is about 17005.8907440922. The cubic root of 289200320 is about 661.3016247515.

The spelling of 289200320 in words is "two hundred eighty-nine million, two hundred thousand, three hundred twenty".