28457241 has 16 divisors (see below), whose sum is σ = 38491200. Its totient is φ = 18699968.

The previous prime is 28457227. The next prime is 28457243. The reversal of 28457241 is 14275482.

It is a cyclic number.

It is not a de Polignac number, because 28457241 - 2⁷ = 28457113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28457243) 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, 105655 + ... + 105923.

It is an arithmetic number, because the mean of its divisors is an integer number (2405700).

Almost surely, 2^28457241 is an apocalyptic number.

It is an amenable number.

28457241 is a deficient number, since it is larger than the sum of its proper divisors (10033959).

28457241 is a wasteful number, since it uses less digits than its factorization.

28457241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648.

The product of its digits is 17920, while the sum is 33.

The square root of 28457241 is about 5334.5328755197. The cubic root of 28457241 is about 305.3029007328.

The spelling of 28457241 in words is "twenty-eight million, four hundred fifty-seven thousand, two hundred forty-one".