168970140 has 72 divisors (see below), whose sum is σ = 542702160. Its totient is φ = 42407424.

The previous prime is 168970129. The next prime is 168970163. The reversal of 168970140 is 41079861.

168970140 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 168970095 and 168970104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24550 + ... + 30669.

It is an arithmetic number, because the mean of its divisors is an integer number (7537530).

Almost surely, 2^168970140 is an apocalyptic number.

168970140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168970140 is an abundant number, since it is smaller than the sum of its proper divisors (373732020).

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

168970140 is a wasteful number, since it uses less digits than its factorization.

168970140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55251 (or 55246 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 168970140 is about 12998.8514877277. The cubic root of 168970140 is about 552.8449174744.

The spelling of 168970140 in words is "one hundred sixty-eight million, nine hundred seventy thousand, one hundred forty".