78445036 has 12 divisors (see below), whose sum is σ = 137342128. Its totient is φ = 39204432.

The previous prime is 78445009. The next prime is 78445049. The reversal of 78445036 is 63054487.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 78444986 and 78445004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11710 + ... + 17146.

Almost surely, 2^78445036 is an apocalyptic number.

It is an amenable number.

78445036 is a deficient number, since it is larger than the sum of its proper divisors (58897092).

78445036 is a wasteful number, since it uses less digits than its factorization.

78445036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9048 (or 9046 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 78445036 is about 8856.9202322252. The cubic root of 78445036 is about 428.0769288453.

It can be divided in two parts, 7844 and 5036, that added together give a triangular number (12880 = T₁₆₀).

The spelling of 78445036 in words is "seventy-eight million, four hundred forty-five thousand, thirty-six".