28196580 has 48 divisors (see below), whose sum is σ = 79289280. Its totient is φ = 7486848.

The previous prime is 28196549. The next prime is 28196599. The reversal of 28196580 is 8569182.

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, 15267 + ... + 17013.

It is an arithmetic number, because the mean of its divisors is an integer number (1651860).

Almost surely, 2^28196580 is an apocalyptic number.

28196580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28196580 is an abundant number, since it is smaller than the sum of its proper divisors (51092700).

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

28196580 is a wasteful number, since it uses less digits than its factorization.

28196580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2028 (or 2026 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 28196580 is about 5310.0451975478. The cubic root of 28196580 is about 304.3678747100.

The spelling of 28196580 in words is "twenty-eight million, one hundred ninety-six thousand, five hundred eighty".