168838772 has 12 divisors (see below), whose sum is σ = 304999296. Its totient is φ = 81696120.

The previous prime is 168838763. The next prime is 168838793. The reversal of 168838772 is 277838861.

It is a self number, because there is not a number n which added to its sum of digits gives 168838772.

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, 680678 + ... + 680925.

It is an arithmetic number, because the mean of its divisors is an integer number (25416608).

Almost surely, 2^168838772 is an apocalyptic number.

It is an amenable number.

168838772 is a deficient number, since it is larger than the sum of its proper divisors (136160524).

168838772 is a wasteful number, since it uses less digits than its factorization.

168838772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361638 (or 1361636 counting only the distinct ones).

The product of its digits is 903168, while the sum is 50.

The square root of 168838772 is about 12993.7974433958. The cubic root of 168838772 is about 552.7016082076.

The spelling of 168838772 in words is "one hundred sixty-eight million, eight hundred thirty-eight thousand, seven hundred seventy-two".