28556241 has 16 divisors (see below), whose sum is σ = 44337024. Its totient is φ = 16009344.

The previous prime is 28556237. The next prime is 28556249. The reversal of 28556241 is 14265582.

It is not a de Polignac number, because 28556241 - 2² = 28556237 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28556249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11716 + ... + 13941.

It is an arithmetic number, because the mean of its divisors is an integer number (2771064).

Almost surely, 2^28556241 is an apocalyptic number.

28556241 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

28556241 is a deficient number, since it is larger than the sum of its proper divisors (15780783).

28556241 is a wasteful number, since it uses less digits than its factorization.

28556241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25720.

The product of its digits is 19200, while the sum is 33.

The square root of 28556241 is about 5343.8039821835. The cubic root of 28556241 is about 305.6565307611.

The spelling of 28556241 in words is "twenty-eight million, five hundred fifty-six thousand, two hundred forty-one".