168271904 has 24 divisors (see below), whose sum is σ = 348722640. Its totient is φ = 79707456.

The previous prime is 168271903. The next prime is 168271921. The reversal of 168271904 is 409172861.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (168271903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137774 + ... + 138989.

It is an arithmetic number, because the mean of its divisors is an integer number (14530110).

Almost surely, 2^168271904 is an apocalyptic number.

It is an amenable number.

168271904 is an abundant number, since it is smaller than the sum of its proper divisors (180450736).

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

168271904 is a wasteful number, since it uses less digits than its factorization.

168271904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276792 (or 276784 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 168271904 is about 12971.9660807450. The cubic root of 168271904 is about 552.0823583620.

The spelling of 168271904 in words is "one hundred sixty-eight million, two hundred seventy-one thousand, nine hundred four".