28180378041 has 8 divisors (see below), whose sum is σ = 38026534560. Its totient is φ = 18560570112.

The previous prime is 28180378007. The next prime is 28180378097. The reversal of 28180378041 is 14087308182.

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

It is not a de Polignac number, because 28180378041 - 2⁶ = 28180377977 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28180377984 and 28180378002.

It is not an unprimeable number, because it can be changed into a prime (28180373041) 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, 56586856 + ... + 56587353.

It is an arithmetic number, because the mean of its divisors is an integer number (4753316820).

Almost surely, 2^28180378041 is an apocalyptic number.

It is an amenable number.

28180378041 is a deficient number, since it is larger than the sum of its proper divisors (9846156519).

28180378041 is a wasteful number, since it uses less digits than its factorization.

28180378041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113174295.

The product of its (nonzero) digits is 86016, while the sum is 42.

The spelling of 28180378041 in words is "twenty-eight billion, one hundred eighty million, three hundred seventy-eight thousand, forty-one".