28616080 has 40 divisors (see below), whose sum is σ = 67174272. Its totient is φ = 11336064.

The previous prime is 28616057. The next prime is 28616101. The reversal of 28616080 is 8061682.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6889 + ... + 10231.

Almost surely, 2^28616080 is an apocalyptic number.

28616080 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 28616080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33587136).

28616080 is an abundant number, since it is smaller than the sum of its proper divisors (38558192).

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

28616080 is a wasteful number, since it uses less digits than its factorization.

28616080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3463 (or 3457 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 28616080 is about 5349.3999663514. The cubic root of 28616080 is about 305.8698807422.

The spelling of 28616080 in words is "twenty-eight million, six hundred sixteen thousand, eighty".