28643341 has 4 divisors (see below), whose sum is σ = 28833184. Its totient is φ = 28453500.

The previous prime is 28643311. The next prime is 28643357. The reversal of 28643341 is 14334682.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28643341 - 2⁹ = 28642829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28643311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94695 + ... + 94996.

It is an arithmetic number, because the mean of its divisors is an integer number (7208296).

Almost surely, 2^28643341 is an apocalyptic number.

It is an amenable number.

28643341 is a deficient number, since it is larger than the sum of its proper divisors (189843).

28643341 is a wasteful number, since it uses less digits than its factorization.

28643341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189842.

The product of its digits is 13824, while the sum is 31.

The square root of 28643341 is about 5351.9474025816. The cubic root of 28643341 is about 305.9669785091.

The spelling of 28643341 in words is "twenty-eight million, six hundred forty-three thousand, three hundred forty-one".