78186282 has 16 divisors (see below), whose sum is σ = 157757760. Its totient is φ = 25831232.

The previous prime is 78186263. The next prime is 78186299. The reversal of 78186282 is 28268187.

It is a super-2 number, since 2×78186282² = 12226189385967048, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56982 + ... + 58337.

It is an arithmetic number, because the mean of its divisors is an integer number (9859860).

Almost surely, 2^78186282 is an apocalyptic number.

78186282 is an abundant number, since it is smaller than the sum of its proper divisors (79571478).

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

78186282 is a wasteful number, since it uses less digits than its factorization.

78186282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115437.

The product of its digits is 86016, while the sum is 42.

The square root of 78186282 is about 8842.3007187044. The cubic root of 78186282 is about 427.6057342513.

The spelling of 78186282 in words is "seventy-eight million, one hundred eighty-six thousand, two hundred eighty-two".