78182868 has 24 divisors (see below), whose sum is σ = 188312320. Its totient is φ = 25220160.

The previous prime is 78182861. The next prime is 78182893. The reversal of 78182868 is 86828187.

It is a super-2 number, since 2×78182868² = 12225121697410848, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78182861) 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, 104713 + ... + 105456.

Almost surely, 2^78182868 is an apocalyptic number.

It is an amenable number.

78182868 is an abundant number, since it is smaller than the sum of its proper divisors (110129452).

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

78182868 is a wasteful number, since it uses less digits than its factorization.

78182868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210207 (or 210205 counting only the distinct ones).

The product of its digits is 344064, while the sum is 48.

The square root of 78182868 is about 8842.1076672929. The cubic root of 78182868 is about 427.5995103666.

The spelling of 78182868 in words is "seventy-eight million, one hundred eighty-two thousand, eight hundred sixty-eight".