168243772 has 12 divisors (see below), whose sum is σ = 298154080. Its totient is φ = 83056896.

The previous prime is 168243769. The next prime is 168243791. The reversal of 168243772 is 277342861.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265893 + ... + 266524.

Almost surely, 2^168243772 is an apocalyptic number.

It is an amenable number.

168243772 is a deficient number, since it is larger than the sum of its proper divisors (129910308).

168243772 is a wasteful number, since it uses less digits than its factorization.

168243772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532500 (or 532498 counting only the distinct ones).

The product of its digits is 112896, while the sum is 40.

The square root of 168243772 is about 12970.8816970937. The cubic root of 168243772 is about 552.0515906063.

It can be divided in two parts, 1682 and 43772, that added together give a palindrome (45454).

The spelling of 168243772 in words is "one hundred sixty-eight million, two hundred forty-three thousand, seven hundred seventy-two".