28738969279 has 8 divisors (see below), whose sum is σ = 28928862720. Its totient is φ = 28549402200.

The previous prime is 28738969271. The next prime is 28738969283. The reversal of 28738969279 is 97296983782.

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 28738969279 - 2³ = 28738969271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28738969271) 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, 96384 + ... + 258394.

It is an arithmetic number, because the mean of its divisors is an integer number (3616107840).

Almost surely, 2^28738969279 is an apocalyptic number.

28738969279 is a deficient number, since it is larger than the sum of its proper divisors (189893441).

28738969279 is a wasteful number, since it uses less digits than its factorization.

28738969279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163181.

The product of its digits is 164602368, while the sum is 70.

The spelling of 28738969279 in words is "twenty-eight billion, seven hundred thirty-eight million, nine hundred sixty-nine thousand, two hundred seventy-nine".