168626820 has 48 divisors (see below), whose sum is σ = 474078528. Its totient is φ = 44784000.

The previous prime is 168626819. The next prime is 168626827. The reversal of 168626820 is 28626861.

168626820 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (168626827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9462 + ... + 20658.

It is an arithmetic number, because the mean of its divisors is an integer number (9876636).

Almost surely, 2^168626820 is an apocalyptic number.

168626820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168626820 is an abundant number, since it is smaller than the sum of its proper divisors (305451708).

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

168626820 is a wasteful number, since it uses less digits than its factorization.

168626820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11460 (or 11458 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 168626820 is about 12985.6389908237. The cubic root of 168626820 is about 552.4702331035.

The spelling of 168626820 in words is "one hundred sixty-eight million, six hundred twenty-six thousand, eight hundred twenty".