78913850 has 12 divisors (see below), whose sum is σ = 146779854. Its totient is φ = 31565520.

The previous prime is 78913841. The next prime is 78913867. The reversal of 78913850 is 5831987.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 31730689 + 47183161 = 5633^2 + 6869^2 .

It is a junction number, because it is equal to n+sod(n) for n = 78913798 and 78913807.

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 in 5 ways as a sum of consecutive naturals, for example, 789089 + ... + 789188.

Almost surely, 2^78913850 is an apocalyptic number.

78913850 is a deficient number, since it is larger than the sum of its proper divisors (67866004).

78913850 is a wasteful number, since it uses less digits than its factorization.

78913850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1578289 (or 1578284 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 78913850 is about 8883.3467792268. The cubic root of 78913850 is about 428.9280130170.

The spelling of 78913850 in words is "seventy-eight million, nine hundred thirteen thousand, eight hundred fifty".