28232459 has 4 divisors (see below), whose sum is σ = 28243800. Its totient is φ = 28221120.

The previous prime is 28232419. The next prime is 28232471. The reversal of 28232459 is 95423282.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 28232459 - 2¹² = 28228363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28232419) 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, 134 + ... + 7515.

It is an arithmetic number, because the mean of its divisors is an integer number (7060950).

Almost surely, 2^28232459 is an apocalyptic number.

28232459 is a deficient number, since it is larger than the sum of its proper divisors (11341).

28232459 is an equidigital number, since it uses as much as digits as its factorization.

28232459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11340.

The product of its digits is 34560, while the sum is 35.

The square root of 28232459 is about 5313.4225316645. The cubic root of 28232459 is about 304.4969185671.

The spelling of 28232459 in words is "twenty-eight million, two hundred thirty-two thousand, four hundred fifty-nine".