28943241 has 8 divisors (see below), whose sum is σ = 38617920. Its totient is φ = 19282032.

The previous prime is 28943237. The next prime is 28943249. The reversal of 28943241 is 14234982.

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

It is not a de Polignac number, because 28943241 - 2² = 28943237 is a prime.

It is a super-2 number, since 2×28943241² = 1675422399168162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28943249) 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, 3876 + ... + 8538.

It is an arithmetic number, because the mean of its divisors is an integer number (4827240).

Almost surely, 2^28943241 is an apocalyptic number.

It is an amenable number.

28943241 is a deficient number, since it is larger than the sum of its proper divisors (9674679).

28943241 is a wasteful number, since it uses less digits than its factorization.

28943241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6735.

The product of its digits is 13824, while the sum is 33.

The square root of 28943241 is about 5379.8922851671. The cubic root of 28943241 is about 307.0311130036.

The spelling of 28943241 in words is "twenty-eight million, nine hundred forty-three thousand, two hundred forty-one".