28188678603 has 8 divisors (see below), whose sum is σ = 38797321216. Its totient is φ = 18186244200.

The previous prime is 28188678599. The next prime is 28188678689. The reversal of 28188678603 is 30687688182.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28188678603 - 2² = 28188678599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28188673603) 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, 151551943 + ... + 151552128.

It is an arithmetic number, because the mean of its divisors is an integer number (4849665152).

Almost surely, 2^28188678603 is an apocalyptic number.

28188678603 is a deficient number, since it is larger than the sum of its proper divisors (10608642613).

28188678603 is a wasteful number, since it uses less digits than its factorization.

28188678603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303104105.

The product of its (nonzero) digits is 6193152, while the sum is 57.

The spelling of 28188678603 in words is "twenty-eight billion, one hundred eighty-eight million, six hundred seventy-eight thousand, six hundred three".