78946648 has 32 divisors (see below), whose sum is σ = 165427920. Its totient is φ = 35008000.

The previous prime is 78946643. The next prime is 78946709. The reversal of 78946648 is 84664987.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 78946595 and 78946604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78946643) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 7333 + ... + 14548.

Almost surely, 2^78946648 is an apocalyptic number.

It is an amenable number.

78946648 is an abundant number, since it is smaller than the sum of its proper divisors (86481272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78946648 is a wasteful number, since it uses less digits than its factorization.

78946648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21939 (or 21935 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 52.

The square root of 78946648 is about 8885.1926259367. The cubic root of 78946648 is about 428.9874281575.

The spelling of 78946648 in words is "seventy-eight million, nine hundred forty-six thousand, six hundred forty-eight".