28421241 has 8 divisors (see below), whose sum is σ = 38819424. Its totient is φ = 18485280.

The previous prime is 28421231. The next prime is 28421249. The reversal of 28421241 is 14212482.

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

It is not a de Polignac number, because 28421241 - 2⁵ = 28421209 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28421249) 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, 115411 + ... + 115656.

It is an arithmetic number, because the mean of its divisors is an integer number (4852428).

Almost surely, 2^28421241 is an apocalyptic number.

It is an amenable number.

28421241 is a deficient number, since it is larger than the sum of its proper divisors (10398183).

28421241 is a wasteful number, since it uses less digits than its factorization.

28421241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231111.

The product of its digits is 1024, while the sum is 24.

The square root of 28421241 is about 5331.1575666078. The cubic root of 28421241 is about 305.1741046631.

The spelling of 28421241 in words is "twenty-eight million, four hundred twenty-one thousand, two hundred forty-one".