78043628 has 12 divisors (see below), whose sum is σ = 147082320. Its totient is φ = 36020112.

The previous prime is 78043627. The next prime is 78043631. The reversal of 78043628 is 82634087.

It is a junction number, because it is equal to n+sod(n) for n = 78043591 and 78043600.

It is not an unprimeable number, because it can be changed into a prime (78043627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 750368 + ... + 750471.

It is an arithmetic number, because the mean of its divisors is an integer number (12256860).

Almost surely, 2^78043628 is an apocalyptic number.

It is an amenable number.

78043628 is a deficient number, since it is larger than the sum of its proper divisors (69038692).

78043628 is a wasteful number, since it uses less digits than its factorization.

78043628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500856 (or 1500854 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 78043628 is about 8834.2304701655. The cubic root of 78043628 is about 427.3455146694.

The spelling of 78043628 in words is "seventy-eight million, forty-three thousand, six hundred twenty-eight".