168402680 has 32 divisors (see below), whose sum is σ = 401196240. Its totient is φ = 63398400.

The previous prime is 168402673. The next prime is 168402683. The reversal of 168402680 is 86204861.

168402680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 168402680.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168402683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123146 + ... + 124505.

Almost surely, 2^168402680 is an apocalyptic number.

168402680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168402680 is an abundant number, since it is smaller than the sum of its proper divisors (232793560).

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

168402680 is a wasteful number, since it uses less digits than its factorization.

168402680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247679 (or 247675 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 168402680 is about 12977.0058179844. The cubic root of 168402680 is about 552.2253420789.

The spelling of 168402680 in words is "one hundred sixty-eight million, four hundred two thousand, six hundred eighty".