28743499 has 2 divisors, whose sum is σ = 28743500. Its totient is φ = 28743498.

The previous prime is 28743497. The next prime is 28743511. The reversal of 28743499 is 99434782.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28743499 - 2¹ = 28743497 is a prime.

Together with 28743497, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (28743493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14371749 + 14371750.

It is an arithmetic number, because the mean of its divisors is an integer number (14371750).

Almost surely, 2^28743499 is an apocalyptic number.

28743499 is a deficient number, since it is larger than the sum of its proper divisors (1).

28743499 is an equidigital number, since it uses as much as digits as its factorization.

28743499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 46.

The square root of 28743499 is about 5361.2963917321. The cubic root of 28743499 is about 306.3231915026.

The spelling of 28743499 in words is "twenty-eight million, seven hundred forty-three thousand, four hundred ninety-nine".