289201940 has 24 divisors (see below), whose sum is σ = 614151720. Its totient is φ = 114380288.

The previous prime is 289201933. The next prime is 289201967. The reversal of 289201940 is 49102982.

It can be written as a sum of positive squares in 4 ways, for example, as 73582084 + 215619856 = 8578^2 + 14684^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 289201940.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79457 + ... + 83016.

It is an arithmetic number, because the mean of its divisors is an integer number (25589655).

Almost surely, 2^289201940 is an apocalyptic number.

289201940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

289201940 is an abundant number, since it is smaller than the sum of its proper divisors (324949780).

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

289201940 is a wasteful number, since it uses less digits than its factorization.

289201940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162571 (or 162569 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 289201940 is about 17005.9383745796. The cubic root of 289201940 is about 661.3028595434.

The spelling of 289201940 in words is "two hundred eighty-nine million, two hundred one thousand, nine hundred forty".