168396992 has 14 divisors (see below), whose sum is σ = 334162908. Its totient is φ = 84198464.

The previous prime is 168396973. The next prime is 168397003. The reversal of 168396992 is 299693861.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1315538 + ... + 1315665.

Almost surely, 2^168396992 is an apocalyptic number.

It is an amenable number.

168396992 is a deficient number, since it is larger than the sum of its proper divisors (165765916).

168396992 is an equidigital number, since it uses as much as digits as its factorization.

168396992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2631215 (or 2631205 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 53.

The square root of 168396992 is about 12976.7866592620. The cubic root of 168396992 is about 552.2191246539.

The spelling of 168396992 in words is "one hundred sixty-eight million, three hundred ninety-six thousand, nine hundred ninety-two".