168989272 has 16 divisors (see below), whose sum is σ = 318801240. Its totient is φ = 83975616.

The previous prime is 168989263. The next prime is 168989279. The reversal of 168989272 is 272989861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168989279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63493 + ... + 66100.

Almost surely, 2^168989272 is an apocalyptic number.

It is an amenable number.

168989272 is a deficient number, since it is larger than the sum of its proper divisors (149811968).

168989272 is a wasteful number, since it uses less digits than its factorization.

168989272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129762 (or 129758 counting only the distinct ones).

The product of its digits is 870912, while the sum is 52.

The square root of 168989272 is about 12999.5873780670. The cubic root of 168989272 is about 552.8657823637.

The spelling of 168989272 in words is "one hundred sixty-eight million, nine hundred eighty-nine thousand, two hundred seventy-two".