78585212 has 12 divisors (see below), whose sum is σ = 137762520. Its totient is φ = 39224496.

The previous prime is 78585211. The next prime is 78585239. The reversal of 78585212 is 21258587.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78585211) 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, 14387 + ... + 19082.

It is an arithmetic number, because the mean of its divisors is an integer number (11480210).

Almost surely, 2^78585212 is an apocalyptic number.

It is an amenable number.

78585212 is a deficient number, since it is larger than the sum of its proper divisors (59177308).

78585212 is a wasteful number, since it uses less digits than its factorization.

78585212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34060 (or 34058 counting only the distinct ones).

The product of its digits is 44800, while the sum is 38.

The square root of 78585212 is about 8864.8300604129. The cubic root of 78585212 is about 428.3317586717.

The spelling of 78585212 in words is "seventy-eight million, five hundred eighty-five thousand, two hundred twelve".