28080837 has 24 divisors (see below), whose sum is σ = 42666624. Its totient is φ = 18452448.

The previous prime is 28080799. The next prime is 28080847. The reversal of 28080837 is 73808082.

It is not a de Polignac number, because 28080837 - 2⁷ = 28080709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28080847) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16948 + ... + 18530.

It is an arithmetic number, because the mean of its divisors is an integer number (1777776).

Almost surely, 2^28080837 is an apocalyptic number.

28080837 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

28080837 is a deficient number, since it is larger than the sum of its proper divisors (14585787).

28080837 is an equidigital number, since it uses as much as digits as its factorization.

28080837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1671 (or 1659 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 28080837 is about 5299.1354955313. The cubic root of 28080837 is about 303.9508411104.

The spelling of 28080837 in words is "twenty-eight million, eighty thousand, eight hundred thirty-seven".