28886178332 has 24 divisors (see below), whose sum is σ = 55153414512. Its totient is φ = 13128396800.

The previous prime is 28886178323. The next prime is 28886178353. The reversal of 28886178332 is 23387168882.

It is a happy number.

It is a super-2 number, since 2×28886178332² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344732 + ... + 420252.

It is an arithmetic number, because the mean of its divisors is an integer number (2298058938).

Almost surely, 2^28886178332 is an apocalyptic number.

28886178332 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28886178332 is a deficient number, since it is larger than the sum of its proper divisors (26267236180).

28886178332 is a wasteful number, since it uses less digits than its factorization.

28886178332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84229 (or 84227 counting only the distinct ones).

The product of its digits is 6193152, while the sum is 56.

The spelling of 28886178332 in words is "twenty-eight billion, eight hundred eighty-six million, one hundred seventy-eight thousand, three hundred thirty-two".