28591241 has 8 divisors (see below), whose sum is σ = 32732544. Its totient is φ = 24464160.

The previous prime is 28591237. The next prime is 28591243. The reversal of 28591241 is 14219582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28591241 - 2² = 28591237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28591198 and 28591207.

It is not an unprimeable number, because it can be changed into a prime (28591243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1181 + ... + 7653.

It is an arithmetic number, because the mean of its divisors is an integer number (4091568).

Almost surely, 2^28591241 is an apocalyptic number.

It is an amenable number.

28591241 is a deficient number, since it is larger than the sum of its proper divisors (4141303).

28591241 is an equidigital number, since it uses as much as digits as its factorization.

28591241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7111.

The product of its digits is 5760, while the sum is 32.

The square root of 28591241 is about 5347.0778000699. The cubic root of 28591241 is about 305.7813559074.

The spelling of 28591241 in words is "twenty-eight million, five hundred ninety-one thousand, two hundred forty-one".