28007459 has 4 divisors (see below), whose sum is σ = 28148400. Its totient is φ = 27866520.

The previous prime is 28007453. The next prime is 28007461. The reversal of 28007459 is 95470082.

It is a happy number.

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 28007459 - 2²⁴ = 11230243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28007453) 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 3 ways as a sum of consecutive naturals, for example, 70172 + ... + 70569.

It is an arithmetic number, because the mean of its divisors is an integer number (7037100).

Almost surely, 2^28007459 is an apocalyptic number.

28007459 is a deficient number, since it is larger than the sum of its proper divisors (140941).

28007459 is a wasteful number, since it uses less digits than its factorization.

28007459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140940.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 28007459 is about 5292.2073844474. The cubic root of 28007459 is about 303.6858589806.

The spelling of 28007459 in words is "twenty-eight million, seven thousand, four hundred fifty-nine".