78193356 has 12 divisors (see below), whose sum is σ = 182451192. Its totient is φ = 26064448.

The previous prime is 78193337. The next prime is 78193403. The reversal of 78193356 is 65339187.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×78193356² = 12228401845085472, which contains 22 as substring.

It is an unprimeable number.

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, 3258045 + ... + 3258068.

It is an arithmetic number, because the mean of its divisors is an integer number (15204266).

Almost surely, 2^78193356 is an apocalyptic number.

It is an amenable number.

78193356 is an abundant number, since it is smaller than the sum of its proper divisors (104257836).

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

78193356 is a wasteful number, since it uses less digits than its factorization.

78193356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6516120 (or 6516118 counting only the distinct ones).

The product of its digits is 136080, while the sum is 42.

The square root of 78193356 is about 8842.7007186719. The cubic root of 78193356 is about 427.6186299140.

It can be divided in two parts, 7819 and 3356, that added together give a triangular number (11175 = T₁₄₉).

The spelling of 78193356 in words is "seventy-eight million, one hundred ninety-three thousand, three hundred fifty-six".