78526312 has 8 divisors (see below), whose sum is σ = 147236850. Its totient is φ = 39263152.

The previous prime is 78526303. The next prime is 78526339. The reversal of 78526312 is 21362587.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 39513796 + 39012516 = 6286^2 + 6246^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4907887 + ... + 4907902.

Almost surely, 2^78526312 is an apocalyptic number.

It is an amenable number.

78526312 is a deficient number, since it is larger than the sum of its proper divisors (68710538).

78526312 is a wasteful number, since it uses less digits than its factorization.

78526312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9815795 (or 9815791 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 78526312 is about 8861.5073209923. The cubic root of 78526312 is about 428.2247196772.

Adding to 78526312 its reverse (21362587), we get a palindrome (99888899).

The spelling of 78526312 in words is "seventy-eight million, five hundred twenty-six thousand, three hundred twelve".