28555260 has 24 divisors (see below), whose sum is σ = 79954896. Its totient is φ = 7614720.

The previous prime is 28555253. The next prime is 28555301. The reversal of 28555260 is 6255582.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237901 + ... + 238020.

It is an arithmetic number, because the mean of its divisors is an integer number (3331454).

Almost surely, 2^28555260 is an apocalyptic number.

28555260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28555260 is an abundant number, since it is smaller than the sum of its proper divisors (51399636).

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

28555260 is a wasteful number, since it uses less digits than its factorization.

28555260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475933 (or 475931 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 33.

The square root of 28555260 is about 5343.7121928487. The cubic root of 28555260 is about 305.6530306215.

The spelling of 28555260 in words is "twenty-eight million, five hundred fifty-five thousand, two hundred sixty".