28082906628 has 96 divisors (see below), whose sum is σ = 79501492224. Its totient is φ = 7531842048.

The previous prime is 28082906627. The next prime is 28082906629. The reversal of 28082906628 is 82660928082.

It is an interprime number because it is at equal distance from previous prime (28082906627) and next prime (28082906629).

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (28082906627) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 521251 + ... + 572597.

It is an arithmetic number, because the mean of its divisors is an integer number (828140544).

Almost surely, 2^28082906628 is an apocalyptic number.

28082906628 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28082906628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39750746112).

28082906628 is an abundant number, since it is smaller than the sum of its proper divisors (51418585596).

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

28082906628 is a wasteful number, since it uses less digits than its factorization.

28082906628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51761 (or 51759 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 51.

The spelling of 28082906628 in words is "twenty-eight billion, eighty-two million, nine hundred six thousand, six hundred twenty-eight".