28124479 has 2 divisors, whose sum is σ = 28124480. Its totient is φ = 28124478.

The previous prime is 28124441. The next prime is 28124489. The reversal of 28124479 is 97442182.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28124479 - 2¹⁵ = 28091711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28124429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14062239 + 14062240.

It is an arithmetic number, because the mean of its divisors is an integer number (14062240).

Almost surely, 2^28124479 is an apocalyptic number.

28124479 is a deficient number, since it is larger than the sum of its proper divisors (1).

28124479 is an equidigital number, since it uses as much as digits as its factorization.

28124479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 37.

The square root of 28124479 is about 5303.2517383206. The cubic root of 28124479 is about 304.1082219435.

The spelling of 28124479 in words is "twenty-eight million, one hundred twenty-four thousand, four hundred seventy-nine".