78061936 has 10 divisors (see below), whose sum is σ = 151245032. Its totient is φ = 39030960.

The previous prime is 78061859. The next prime is 78061961. The reversal of 78061936 is 63916087.

It is a congruent 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, 2439420 + ... + 2439451.

Almost surely, 2^78061936 is an apocalyptic number.

It is an amenable number.

78061936 is a deficient number, since it is larger than the sum of its proper divisors (73183096).

78061936 is a wasteful number, since it uses less digits than its factorization.

78061936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4878879 (or 4878873 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 78061936 is about 8835.2666060510. The cubic root of 78061936 is about 427.3789285866.

The spelling of 78061936 in words is "seventy-eight million, sixty-one thousand, nine hundred thirty-six".