168393320 has 16 divisors (see below), whose sum is σ = 378885060. Its totient is φ = 67357312.

The previous prime is 168393307. The next prime is 168393331. The reversal of 168393320 is 23393861.

It can be written as a sum of positive squares in 2 ways, for example, as 168324676 + 68644 = 12974^2 + 262^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2104877 + ... + 2104956.

Almost surely, 2^168393320 is an apocalyptic number.

168393320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168393320 is an abundant number, since it is smaller than the sum of its proper divisors (210491740).

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

168393320 is a wasteful number, since it uses less digits than its factorization.

168393320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4209844 (or 4209840 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 168393320 is about 12976.6451750828. The cubic root of 168393320 is about 552.2151107988.

The spelling of 168393320 in words is "one hundred sixty-eight million, three hundred ninety-three thousand, three hundred twenty".