78203166 has 8 divisors (see below), whose sum is σ = 156406344. Its totient is φ = 26067720.

The previous prime is 78203161. The next prime is 78203263. The reversal of 78203166 is 66130287.

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

78203166 is an admirable number.

It is a super-2 number, since 2×78203166² = 12231470344847112, which contains 22 as substring.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78203161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6516925 + ... + 6516936.

It is an arithmetic number, because the mean of its divisors is an integer number (19550793).

Almost surely, 2^78203166 is an apocalyptic number.

78203166 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

78203166 is a wasteful number, since it uses less digits than its factorization.

78203166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13033866.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 78203166 is about 8843.2553960631. The cubic root of 78203166 is about 427.6365119249.

The spelling of 78203166 in words is "seventy-eight million, two hundred three thousand, one hundred sixty-six".