78185112 has 16 divisors (see below), whose sum is σ = 195462840. Its totient is φ = 26061696.

The previous prime is 78185099. The next prime is 78185113. The reversal of 78185112 is 21158187.

It is a super-2 number, since 2×78185112² = 12225823476905088, which contains 22 as substring.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78185113) 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, 1628833 + ... + 1628880.

Almost surely, 2^78185112 is an apocalyptic number.

It is an amenable number.

78185112 is an abundant number, since it is smaller than the sum of its proper divisors (117277728).

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

78185112 is a wasteful number, since it uses less digits than its factorization.

78185112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3257722 (or 3257718 counting only the distinct ones).

The product of its digits is 4480, while the sum is 33.

The square root of 78185112 is about 8842.2345592050. The cubic root of 78185112 is about 427.6036013060.

The spelling of 78185112 in words is "seventy-eight million, one hundred eighty-five thousand, one hundred twelve".