28910080 has 80 divisors (see below), whose sum is σ = 72477504. Its totient is φ = 11038720.

The previous prime is 28910053. The next prime is 28910087. The reversal of 28910080 is 8001982.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (28910087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58635 + ... + 59125.

Almost surely, 2^28910080 is an apocalyptic number.

28910080 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 28910080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36238752).

28910080 is an abundant number, since it is smaller than the sum of its proper divisors (43567424).

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

28910080 is an equidigital number, since it uses as much as digits as its factorization.

28910080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537 (or 521 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 28910080 is about 5376.8094628692. The cubic root of 28910080 is about 306.9138104343.

It can be divided in two parts, 289100 and 80, that added together give a triangular number (289180 = T₇₆₀).

The spelling of 28910080 in words is "twenty-eight million, nine hundred ten thousand, eighty".