78963530 has 8 divisors (see below), whose sum is σ = 142134372. Its totient is φ = 31585408.

The previous prime is 78963527. The next prime is 78963571. The reversal of 78963530 is 3536987.

It can be written as a sum of positive squares in 2 ways, for example, as 68277169 + 10686361 = 8263^2 + 3269^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3948167 + ... + 3948186.

Almost surely, 2^78963530 is an apocalyptic number.

78963530 is a deficient number, since it is larger than the sum of its proper divisors (63170842).

78963530 is a wasteful number, since it uses less digits than its factorization.

78963530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7896360.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 78963530 is about 8886.1425826958. The cubic root of 78963530 is about 429.0180042904.

The spelling of 78963530 in words is "seventy-eight million, nine hundred sixty-three thousand, five hundred thirty".