28272669376 has 112 divisors (see below), whose sum is σ = 65517491520. Its totient is φ = 11853803520.

The previous prime is 28272669277. The next prime is 28272669407. The reversal of 28272669376 is 67396627282.

It is a tau number, because it is divible by the number of its divisors (112).

It is a self number, because there is not a number n which added to its sum of digits gives 28272669376.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9234886 + ... + 9237946.

Almost surely, 2^28272669376 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28272669376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32758745760).

28272669376 is an abundant number, since it is smaller than the sum of its proper divisors (37244822144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28272669376 is a wasteful number, since it uses less digits than its factorization.

28272669376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3522 (or 3512 counting only the distinct ones).

The product of its digits is 18289152, while the sum is 58.

The spelling of 28272669376 in words is "twenty-eight billion, two hundred seventy-two million, six hundred sixty-nine thousand, three hundred seventy-six".