28028282712 has 64 divisors (see below), whose sum is σ = 72486835200. Its totient is φ = 9021909120.

The previous prime is 28028282707. The next prime is 28028282717. The reversal of 28028282712 is 21728282082.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28028282707) and next prime (28028282717).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28028282717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 307114 + ... + 387782.

It is an arithmetic number, because the mean of its divisors is an integer number (1132606800).

Almost surely, 2^28028282712 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 28028282712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36243417600).

28028282712 is an abundant number, since it is smaller than the sum of its proper divisors (44458552488).

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

28028282712 is a wasteful number, since it uses less digits than its factorization.

28028282712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81176 (or 81172 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 42.

The spelling of 28028282712 in words is "twenty-eight billion, twenty-eight million, two hundred eighty-two thousand, seven hundred twelve".