78908012 has 6 divisors (see below), whose sum is σ = 138089028. Its totient is φ = 39454004.

The previous prime is 78908003. The next prime is 78908047. The reversal of 78908012 is 21080987.

It is a happy number.

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 as a sum of consecutive naturals, namely, 9863498 + ... + 9863505.

It is an arithmetic number, because the mean of its divisors is an integer number (23014838).

Almost surely, 2^78908012 is an apocalyptic number.

It is an amenable number.

78908012 is a deficient number, since it is larger than the sum of its proper divisors (59181016).

78908012 is a wasteful number, since it uses less digits than its factorization.

78908012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19727007 (or 19727005 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 78908012 is about 8883.0181807762. The cubic root of 78908012 is about 428.9174354758.

Adding to 78908012 its reverse (21080987), we get a palindrome (99988999).

The spelling of 78908012 in words is "seventy-eight million, nine hundred eight thousand, twelve".