28152479 has 2 divisors, whose sum is σ = 28152480. Its totient is φ = 28152478.

The previous prime is 28152409. The next prime is 28152497. The reversal of 28152479 is 97425182.

Together with next prime (28152497) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28152479 - 2¹⁶ = 28086943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28152409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14076239 + 14076240.

It is an arithmetic number, because the mean of its divisors is an integer number (14076240).

Almost surely, 2^28152479 is an apocalyptic number.

28152479 is a deficient number, since it is larger than the sum of its proper divisors (1).

28152479 is an equidigital number, since it uses as much as digits as its factorization.

28152479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 38.

The square root of 28152479 is about 5305.8909713638. The cubic root of 28152479 is about 304.2091092168.

The spelling of 28152479 in words is "twenty-eight million, one hundred fifty-two thousand, four hundred seventy-nine".