28800890772 has 24 divisors (see below), whose sum is σ = 68011744416. Its totient is φ = 9484630368.

The previous prime is 28800890771. The next prime is 28800890773. The reversal of 28800890772 is 27709800882.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28800890771) and next prime (28800890773).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28800890771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14457283 + ... + 14459274.

It is an arithmetic number, because the mean of its divisors is an integer number (2833822684).

Almost surely, 2^28800890772 is an apocalyptic number.

It is an amenable number.

28800890772 is an abundant number, since it is smaller than the sum of its proper divisors (39210853644).

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

28800890772 is a wasteful number, since it uses less digits than its factorization.

28800890772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28916647 (or 28916645 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 51.

The spelling of 28800890772 in words is "twenty-eight billion, eight hundred million, eight hundred ninety thousand, seven hundred seventy-two".