168402056 has 16 divisors (see below), whose sum is σ = 316958400. Its totient is φ = 83879824.

The previous prime is 168402049. The next prime is 168402071. The reversal of 168402056 is 650204861.

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, 37916 + ... + 42123.

It is an arithmetic number, because the mean of its divisors is an integer number (19809900).

Almost surely, 2^168402056 is an apocalyptic number.

It is an amenable number.

168402056 is a deficient number, since it is larger than the sum of its proper divisors (148556344).

168402056 is a wasteful number, since it uses less digits than its factorization.

168402056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80308 (or 80304 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 168402056 is about 12976.9817754361. The cubic root of 168402056 is about 552.2246600054.

The spelling of 168402056 in words is "one hundred sixty-eight million, four hundred two thousand, fifty-six".