78028616 has 32 divisors (see below), whose sum is σ = 149001600. Its totient is φ = 38301120.

The previous prime is 78028609. The next prime is 78028619. The reversal of 78028616 is 61682087.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 78028616.

It is not an unprimeable number, because it can be changed into a prime (78028619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209006 + ... + 209378.

It is an arithmetic number, because the mean of its divisors is an integer number (4656300).

Almost surely, 2^78028616 is an apocalyptic number.

It is an amenable number.

78028616 is a deficient number, since it is larger than the sum of its proper divisors (70972984).

78028616 is a wasteful number, since it uses less digits than its factorization.

78028616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789 (or 785 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 78028616 is about 8833.3807797468. The cubic root of 78028616 is about 427.3181123800.

The spelling of 78028616 in words is "seventy-eight million, twenty-eight thousand, six hundred sixteen".