168064240 has 20 divisors (see below), whose sum is σ = 390749544. Its totient is φ = 67225664.

The previous prime is 168064231. The next prime is 168064277. The reversal of 168064240 is 42460861.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1050322 + ... + 1050481.

Almost surely, 2^168064240 is an apocalyptic number.

168064240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168064240 is an abundant number, since it is smaller than the sum of its proper divisors (222685304).

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

168064240 is a wasteful number, since it uses less digits than its factorization.

168064240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2100816 (or 2100810 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 168064240 is about 12963.9592717657. The cubic root of 168064240 is about 551.8551569840.

The spelling of 168064240 in words is "one hundred sixty-eight million, sixty-four thousand, two hundred forty".