168143532 has 24 divisors (see below), whose sum is σ = 415413936. Its totient is φ = 52750848.

The previous prime is 168143519. The next prime is 168143533. The reversal of 168143532 is 235341861.

It is a junction number, because it is equal to n+sod(n) for n = 168143493 and 168143502.

It is not an unprimeable number, because it can be changed into a prime (168143533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 411913 + ... + 412320.

It is an arithmetic number, because the mean of its divisors is an integer number (17308914).

Almost surely, 2^168143532 is an apocalyptic number.

168143532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

168143532 is an abundant number, since it is smaller than the sum of its proper divisors (247270404).

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

168143532 is a wasteful number, since it uses less digits than its factorization.

168143532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824257 (or 824255 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 168143532 is about 12967.0170818118. The cubic root of 168143532 is about 551.9419309845.

The spelling of 168143532 in words is "one hundred sixty-eight million, one hundred forty-three thousand, five hundred thirty-two".