168465540 has 48 divisors (see below), whose sum is σ = 472268160. Its totient is φ = 44870400.

The previous prime is 168465527. The next prime is 168465559. The reversal of 168465540 is 45564861.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92640 + ... + 94440.

It is an arithmetic number, because the mean of its divisors is an integer number (9838920).

Almost surely, 2^168465540 is an apocalyptic number.

168465540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168465540 is an abundant number, since it is smaller than the sum of its proper divisors (303802620).

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

168465540 is a wasteful number, since it uses less digits than its factorization.

168465540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3372 (or 3370 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 39.

The square root of 168465540 is about 12979.4275682713. The cubic root of 168465540 is about 552.2940436118.

The spelling of 168465540 in words is "one hundred sixty-eight million, four hundred sixty-five thousand, five hundred forty".