168238536 has 32 divisors (see below), whose sum is σ = 428535360. Its totient is φ = 55020992.

The previous prime is 168238517. The next prime is 168238571. The reversal of 168238536 is 635832861.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64860 + ... + 67403.

It is an arithmetic number, because the mean of its divisors is an integer number (13391730).

Almost surely, 2^168238536 is an apocalyptic number.

It is an amenable number.

168238536 is an abundant number, since it is smaller than the sum of its proper divisors (260296824).

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

168238536 is a wasteful number, since it uses less digits than its factorization.

168238536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132325 (or 132321 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The square root of 168238536 is about 12970.6798588200. The cubic root of 168238536 is about 552.0458636541.

The spelling of 168238536 in words is "one hundred sixty-eight million, two hundred thirty-eight thousand, five hundred thirty-six".