28357241 has 8 divisors (see below), whose sum is σ = 32755104. Its totient is φ = 24262720.

The previous prime is 28357223. The next prime is 28357243. The reversal of 28357241 is 14275382.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28357241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28357198 and 28357207.

It is not an unprimeable number, because it can be changed into a prime (28357243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75635 + ... + 76008.

It is an arithmetic number, because the mean of its divisors is an integer number (4094388).

Almost surely, 2^28357241 is an apocalyptic number.

It is an amenable number.

28357241 is a deficient number, since it is larger than the sum of its proper divisors (4397863).

28357241 is a wasteful number, since it uses less digits than its factorization.

28357241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151671.

The product of its digits is 13440, while the sum is 32.

The square root of 28357241 is about 5325.1517349274. The cubic root of 28357241 is about 304.9448650674.

The spelling of 28357241 in words is "twenty-eight million, three hundred fifty-seven thousand, two hundred forty-one".