78396105 has 16 divisors (see below), whose sum is σ = 125593344. Its totient is φ = 41758080.

The previous prime is 78396091. The next prime is 78396107. The reversal of 78396105 is 50169387.

It is not a de Polignac number, because 78396105 - 2⁹ = 78395593 is a prime.

It is a super-2 number, since 2×78396105² = 12291898558342050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78396107) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 10797 + ... + 16533.

It is an arithmetic number, because the mean of its divisors is an integer number (7849584).

Almost surely, 2^78396105 is an apocalyptic number.

It is an amenable number.

78396105 is a deficient number, since it is larger than the sum of its proper divisors (47197239).

78396105 is a wasteful number, since it uses less digits than its factorization.

78396105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6656.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 78396105 is about 8854.1574980345. The cubic root of 78396105 is about 427.9879043514.

The spelling of 78396105 in words is "seventy-eight million, three hundred ninety-six thousand, one hundred five".