78104836 has 12 divisors (see below), whose sum is σ = 140017500. Its totient is φ = 38099840.

The previous prime is 78104833. The next prime is 78104857. The reversal of 78104836 is 63840187.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11519236 + 66585600 = 3394^2 + 8160^2 .

It is a super-2 number, since 2×78104836² = 12200730813173792, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78104795 and 78104804.

It is not an unprimeable number, because it can be changed into a prime (78104833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237961 + ... + 238288.

It is an arithmetic number, because the mean of its divisors is an integer number (11668125).

Almost surely, 2^78104836 is an apocalyptic number.

It is an amenable number.

78104836 is a deficient number, since it is larger than the sum of its proper divisors (61912664).

78104836 is a wasteful number, since it uses less digits than its factorization.

78104836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476294 (or 476292 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 78104836 is about 8837.6940431314. The cubic root of 78104836 is about 427.4572048859.

The spelling of 78104836 in words is "seventy-eight million, one hundred four thousand, eight hundred thirty-six".