28061120 has 28 divisors (see below), whose sum is σ = 66821304. Its totient is φ = 11224320.

The previous prime is 28061093. The next prime is 28061123. The reversal of 28061120 is 2116082.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 28061092 and 28061101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28061123) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 43526 + ... + 44165.

Almost surely, 2^28061120 is an apocalyptic number.

28061120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28061120 is an abundant number, since it is smaller than the sum of its proper divisors (38760184).

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

28061120 is an equidigital number, since it uses as much as digits as its factorization.

28061120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87708 (or 87698 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 28061120 is about 5297.2747710497. The cubic root of 28061120 is about 303.8796846138.

The spelling of 28061120 in words is "twenty-eight million, sixty-one thousand, one hundred twenty".