28081080 has 144 divisors (see below), whose sum is σ = 95654520. Its totient is φ = 7418304.

The previous prime is 28081073. The next prime is 28081087. The reversal of 28081080 is 8018082.

It is an interprime number because it is at equal distance from previous prime (28081073) and next prime (28081087).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28081087) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 262387 + ... + 262493.

Almost surely, 2^28081080 is an apocalyptic number.

28081080 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 28081080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47827260).

28081080 is an abundant number, since it is smaller than the sum of its proper divisors (67573440).

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

28081080 is an equidigital number, since it uses as much as digits as its factorization.

28081080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The square root of 28081080 is about 5299.1584237499. The cubic root of 28081080 is about 303.9517178630.

The spelling of 28081080 in words is "twenty-eight million, eighty-one thousand, eighty".