78326115 has 32 divisors (see below), whose sum is σ = 143662080. Its totient is φ = 35697024.

The previous prime is 78326029. The next prime is 78326159. The reversal of 78326115 is 51162387.

It is not a de Polignac number, because 78326115 - 2¹² = 78322019 is a prime.

It is a super-2 number, since 2×78326115² = 12269960581986450, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40746 + ... + 42624.

It is an arithmetic number, because the mean of its divisors is an integer number (4489440).

Almost surely, 2^78326115 is an apocalyptic number.

78326115 is a deficient number, since it is larger than the sum of its proper divisors (65335965).

78326115 is a wasteful number, since it uses less digits than its factorization.

78326115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2291.

The product of its digits is 10080, while the sum is 33.

The square root of 78326115 is about 8850.2042349315. The cubic root of 78326115 is about 427.8605009464.

The spelling of 78326115 in words is "seventy-eight million, three hundred twenty-six thousand, one hundred fifteen".