289860372 has 18 divisors (see below), whose sum is σ = 732702698. Its totient is φ = 96620112.

The previous prime is 289860367. The next prime is 289860413. The reversal of 289860372 is 273068982.

It can be written as a sum of positive squares in only one way, i.e., 286489476 + 3370896 = 16926^2 + 1836^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4025803 + ... + 4025874.

Almost surely, 2^289860372 is an apocalyptic number.

It is an amenable number.

289860372 is an abundant number, since it is smaller than the sum of its proper divisors (442842326).

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

289860372 is a wasteful number, since it uses less digits than its factorization.

289860372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8051687 (or 8051682 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 289860372 is about 17025.2862531001. The cubic root of 289860372 is about 661.8043464240.

The spelling of 289860372 in words is "two hundred eighty-nine million, eight hundred sixty thousand, three hundred seventy-two".