78152286 has 16 divisors (see below), whose sum is σ = 156397824. Its totient is φ = 26035224.

The previous prime is 78152279. The next prime is 78152287. The reversal of 78152286 is 68225187.

It is a super-2 number, since 2×78152286² = 12215559614051592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78152287) by changing a digit.

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, 12021 + ... + 17343.

It is an arithmetic number, because the mean of its divisors is an integer number (9774864).

Almost surely, 2^78152286 is an apocalyptic number.

78152286 is an abundant number, since it is smaller than the sum of its proper divisors (78245538).

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

78152286 is a wasteful number, since it uses less digits than its factorization.

78152286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7775.

The product of its digits is 53760, while the sum is 39.

The square root of 78152286 is about 8840.3781593323. The cubic root of 78152286 is about 427.5437498401.

It can be divided in two parts, 7815 and 2286, that added together give a palindrome (10101).

The spelling of 78152286 in words is "seventy-eight million, one hundred fifty-two thousand, two hundred eighty-six".