78104091 has 8 divisors (see below), whose sum is σ = 112149520. Its totient is φ = 48064032.

The previous prime is 78104071. The next prime is 78104093. The reversal of 78104091 is 19040187.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78104091 - 2⁶ = 78104027 is a prime.

It is a super-2 number, since 2×78104091² = 12200498061872562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78104093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1001296 + ... + 1001373.

It is an arithmetic number, because the mean of its divisors is an integer number (14018690).

Almost surely, 2^78104091 is an apocalyptic number.

78104091 is a deficient number, since it is larger than the sum of its proper divisors (34045429).

78104091 is a wasteful number, since it uses less digits than its factorization.

78104091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002685.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 78104091 is about 8837.6518940271. The cubic root of 78104091 is about 427.4558457868.

The spelling of 78104091 in words is "seventy-eight million, one hundred four thousand, ninety-one".