78168368 has 10 divisors (see below), whose sum is σ = 151451244. Its totient is φ = 39084176.

The previous prime is 78168341. The next prime is 78168401. The reversal of 78168368 is 86386187.

It is a super-2 number, since 2×78168368² = 12220587511566848, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2442746 + ... + 2442777.

Almost surely, 2^78168368 is an apocalyptic number.

It is an amenable number.

78168368 is a deficient number, since it is larger than the sum of its proper divisors (73282876).

78168368 is a wasteful number, since it uses less digits than its factorization.

78168368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4885531 (or 4885525 counting only the distinct ones).

The product of its digits is 387072, while the sum is 47.

The square root of 78168368 is about 8841.2876890191. The cubic root of 78168368 is about 427.5730741562.

The spelling of 78168368 in words is "seventy-eight million, one hundred sixty-eight thousand, three hundred sixty-eight".