28178830718 has 16 divisors (see below), whose sum is σ = 42599551104. Its totient is φ = 13979024280.

The previous prime is 28178830717. The next prime is 28178830741. The reversal of 28178830718 is 81703887182.

It is a self number, because there is not a number n which added to its sum of digits gives 28178830718.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28178830717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1959671 + ... + 1973997.

It is an arithmetic number, because the mean of its divisors is an integer number (2662471944).

Almost surely, 2^28178830718 is an apocalyptic number.

28178830718 is a deficient number, since it is larger than the sum of its proper divisors (14420720386).

28178830718 is a wasteful number, since it uses less digits than its factorization.

28178830718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21967.

The product of its (nonzero) digits is 1204224, while the sum is 53.

The spelling of 28178830718 in words is "twenty-eight billion, one hundred seventy-eight million, eight hundred thirty thousand, seven hundred eighteen".