28511479 has 2 divisors, whose sum is σ = 28511480. Its totient is φ = 28511478.

The previous prime is 28511477. The next prime is 28511489. The reversal of 28511479 is 97411582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28511479 - 2¹ = 28511477 is a prime.

Together with 28511477, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28511477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14255739 + 14255740.

It is an arithmetic number, because the mean of its divisors is an integer number (14255740).

Almost surely, 2^28511479 is an apocalyptic number.

28511479 is a deficient number, since it is larger than the sum of its proper divisors (1).

28511479 is an equidigital number, since it uses as much as digits as its factorization.

28511479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 37.

The square root of 28511479 is about 5339.6141246349. The cubic root of 28511479 is about 305.4967413754.

The spelling of 28511479 in words is "twenty-eight million, five hundred eleven thousand, four hundred seventy-nine".