168271240 has 16 divisors (see below), whose sum is σ = 378610380. Its totient is φ = 67308480.

The previous prime is 168271231. The next prime is 168271267. The reversal of 168271240 is 42172861.

168271240 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 167806116 + 465124 = 12954^2 + 682^2 .

It is a super-2 number, since 2×168271240² = 56630420422275200, which contains 22 as substring.

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, 2103351 + ... + 2103430.

Almost surely, 2^168271240 is an apocalyptic number.

168271240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168271240 is an abundant number, since it is smaller than the sum of its proper divisors (210339140).

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

168271240 is a wasteful number, since it uses less digits than its factorization.

168271240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4206792 (or 4206788 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 168271240 is about 12971.9404870667. The cubic root of 168271240 is about 552.0816321897.

The spelling of 168271240 in words is "one hundred sixty-eight million, two hundred seventy-one thousand, two hundred forty".