78104238 has 16 divisors (see below), whose sum is σ = 157440000. Its totient is φ = 25829496.

The previous prime is 78104237. The next prime is 78104249. The reversal of 78104238 is 83240187.

It is a super-2 number, since 2×78104238² = 12200543987121288, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 78104199 and 78104208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78104237) 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, 50488 + ... + 52011.

It is an arithmetic number, because the mean of its divisors is an integer number (9840000).

Almost surely, 2^78104238 is an apocalyptic number.

78104238 is an abundant number, since it is smaller than the sum of its proper divisors (79335762).

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

78104238 is a wasteful number, since it uses less digits than its factorization.

78104238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102631.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 78104238 is about 8837.6602107119. The cubic root of 78104238 is about 427.4561139587.

The spelling of 78104238 in words is "seventy-eight million, one hundred four thousand, two hundred thirty-eight".