78104111 has 12 divisors (see below), whose sum is σ = 80494848. Its totient is φ = 75775392.

The previous prime is 78104101. The next prime is 78104119. The reversal of 78104111 is 11140187.

It is a happy number.

It is not a de Polignac number, because 78104111 - 2¹⁰ = 78103087 is a prime.

It is a super-2 number, since 2×78104111² = 12200504310200642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78104119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 570035 + ... + 570171.

It is an arithmetic number, because the mean of its divisors is an integer number (6707904).

Almost surely, 2^78104111 is an apocalyptic number.

78104111 is a deficient number, since it is larger than the sum of its proper divisors (2390737).

78104111 is a wasteful number, since it uses less digits than its factorization.

78104111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398 (or 331 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 23.

The square root of 78104111 is about 8837.6530255493. The cubic root of 78104111 is about 427.4558822728.

Adding to 78104111 its reverse (11140187), we get a palindrome (89244298).

The spelling of 78104111 in words is "seventy-eight million, one hundred four thousand, one hundred eleven".