28053860 has 12 divisors (see below), whose sum is σ = 58913148. Its totient is φ = 11221536.

The previous prime is 28053821. The next prime is 28053887. The reversal of 28053860 is 6835082.

It can be written as a sum of positive squares in 2 ways, for example, as 18181696 + 9872164 = 4264^2 + 3142^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 701327 + ... + 701366.

It is an arithmetic number, because the mean of its divisors is an integer number (4909429).

Almost surely, 2^28053860 is an apocalyptic number.

28053860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28053860 is an abundant number, since it is smaller than the sum of its proper divisors (30859288).

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

28053860 is a wasteful number, since it uses less digits than its factorization.

28053860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402702 (or 1402700 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 28053860 is about 5296.5894687053. The cubic root of 28053860 is about 303.8534756719.

The spelling of 28053860 in words is "twenty-eight million, fifty-three thousand, eight hundred sixty".