28886291772 has 24 divisors (see below), whose sum is σ = 72586066896. Its totient is φ = 8888089728.

The previous prime is 28886291747. The next prime is 28886291779. The reversal of 28886291772 is 27719268882.

It is a super-2 number, since 2×28886291772² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28886291779) 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, 92584113 + ... + 92584424.

It is an arithmetic number, because the mean of its divisors is an integer number (3024419454).

Almost surely, 2^28886291772 is an apocalyptic number.

It is an amenable number.

28886291772 is an abundant number, since it is smaller than the sum of its proper divisors (43699775124).

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

28886291772 is a wasteful number, since it uses less digits than its factorization.

28886291772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185168557 (or 185168555 counting only the distinct ones).

The product of its digits is 10838016, while the sum is 60.

The spelling of 28886291772 in words is "twenty-eight billion, eight hundred eighty-six million, two hundred ninety-one thousand, seven hundred seventy-two".