168001408 has 32 divisors (see below), whose sum is σ = 346239000. Its totient is φ = 81102336.

The previous prime is 168001357. The next prime is 168001409. The reversal of 168001408 is 804100861.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168001409) 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, 18918 + ... + 26341.

Almost surely, 2^168001408 is an apocalyptic number.

It is an amenable number.

168001408 is an abundant number, since it is smaller than the sum of its proper divisors (178237592).

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

168001408 is an equidigital number, since it uses as much as digits as its factorization.

168001408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45302 (or 45290 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 168001408 is about 12961.5357114811. The cubic root of 168001408 is about 551.7863767661.

The spelling of 168001408 in words is "one hundred sixty-eight million, one thousand, four hundred eight".