28446459 has 4 divisors (see below), whose sum is σ = 37928616. Its totient is φ = 18964304.

The previous prime is 28446449. The next prime is 28446461. The reversal of 28446459 is 95464482.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28446459 - 2⁴ = 28446443 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28446459.

It is not an unprimeable number, because it can be changed into a prime (28446449) 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, 4741074 + ... + 4741079.

It is an arithmetic number, because the mean of its divisors is an integer number (9482154).

Almost surely, 2^28446459 is an apocalyptic number.

28446459 is a deficient number, since it is larger than the sum of its proper divisors (9482157).

28446459 is an equidigital number, since it uses as much as digits as its factorization.

28446459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9482156.

The product of its digits is 276480, while the sum is 42.

The square root of 28446459 is about 5333.5221945727. The cubic root of 28446459 is about 305.2643377100.

The spelling of 28446459 in words is "twenty-eight million, four hundred forty-six thousand, four hundred fifty-nine".