28026880 has 192 divisors, whose sum is σ = 84913920. Its totient is φ = 8650752.

The previous prime is 28026853. The next prime is 28026893. The reversal of 28026880 is 8862082.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1218549 + ... + 1218571.

It is an arithmetic number, because the mean of its divisors is an integer number (442260).

Almost surely, 2^28026880 is an apocalyptic number.

28026880 is a gapful number since it is divisible by the number (20) 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 28026880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42456960).

28026880 is an abundant number, since it is smaller than the sum of its proper divisors (56887040).

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

28026880 is a wasteful number, since it uses less digits than its factorization.

28026880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74 (or 54 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 28026880 is about 5294.0419340991. The cubic root of 28026880 is about 303.7560369566.

The spelling of 28026880 in words is "twenty-eight million, twenty-six thousand, eight hundred eighty".