28078114231 has 8 divisors (see below), whose sum is σ = 28607066064. Its totient is φ = 27554083200.

The previous prime is 28078114223. The next prime is 28078114237. The reversal of 28078114231 is 13241187082.

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

It is a cyclic number.

It is not a de Polignac number, because 28078114231 - 2³ = 28078114223 is a prime.

It is a super-2 number, since 2×28078114231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28078114237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1218681 + ... + 1241506.

It is an arithmetic number, because the mean of its divisors is an integer number (3575883258).

Almost surely, 2^28078114231 is an apocalyptic number.

28078114231 is a deficient number, since it is larger than the sum of its proper divisors (528951833).

28078114231 is a wasteful number, since it uses less digits than its factorization.

28078114231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2460401.

The product of its (nonzero) digits is 21504, while the sum is 37.

The spelling of 28078114231 in words is "twenty-eight billion, seventy-eight million, one hundred fourteen thousand, two hundred thirty-one".