28277652828 has 24 divisors (see below), whose sum is σ = 66008556432. Its totient is φ = 9421974784.

The previous prime is 28277652827. The next prime is 28277652847. The reversal of 28277652828 is 82825677282.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28277652827) 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, 458475 + ... + 516482.

It is an arithmetic number, because the mean of its divisors is an integer number (2750356518).

Almost surely, 2^28277652828 is an apocalyptic number.

It is an amenable number.

28277652828 is an abundant number, since it is smaller than the sum of its proper divisors (37730903604).

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

28277652828 is a wasteful number, since it uses less digits than its factorization.

28277652828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977381 (or 977379 counting only the distinct ones).

The product of its digits is 12042240, while the sum is 57.

The spelling of 28277652828 in words is "twenty-eight billion, two hundred seventy-seven million, six hundred fifty-two thousand, eight hundred twenty-eight".