289862145252 has 72 divisors (see below), whose sum is σ = 760770541440. Its totient is φ = 92944635840.

The previous prime is 289862145143. The next prime is 289862145263. The reversal of 289862145252 is 252541268982.

289862145252 is a `hidden beast` number, since 2 + 8 + 9 + 8 + 621 + 4 + 5 + 2 + 5 + 2 = 666.

It is a super-3 number, since 3×289862145252³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 229338 + ... + 795185.

It is an arithmetic number, because the mean of its divisors is an integer number (10566257520).

Almost surely, 2^289862145252 is an apocalyptic number.

It is an amenable number.

289862145252 is an abundant number, since it is smaller than the sum of its proper divisors (470908396188).

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

289862145252 is a wasteful number, since it uses less digits than its factorization.

289862145252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024833 (or 1024828 counting only the distinct ones).

The product of its digits is 5529600, while the sum is 54.

The spelling of 289862145252 in words is "two hundred eighty-nine billion, eight hundred sixty-two million, one hundred forty-five thousand, two hundred fifty-two".