289161636 has 24 divisors (see below), whose sum is σ = 714399840. Its totient is φ = 90717312.

The previous prime is 289161617. The next prime is 289161637. The reversal of 289161636 is 636161982.

It is a super-2 number, since 2×289161636² = 167228903468392992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (289161637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 708526 + ... + 708933.

It is an arithmetic number, because the mean of its divisors is an integer number (29766660).

Almost surely, 2^289161636 is an apocalyptic number.

It is an amenable number.

289161636 is an abundant number, since it is smaller than the sum of its proper divisors (425238204).

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

289161636 is a wasteful number, since it uses less digits than its factorization.

289161636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1417483 (or 1417481 counting only the distinct ones).

The product of its digits is 93312, while the sum is 42.

The square root of 289161636 is about 17004.7533354648. The cubic root of 289161636 is about 661.2721377708.

The spelling of 289161636 in words is "two hundred eighty-nine million, one hundred sixty-one thousand, six hundred thirty-six".