28706459 has 6 divisors (see below), whose sum is σ = 28920780. Its totient is φ = 28493700.

The previous prime is 28706441. The next prime is 28706477. The reversal of 28706459 is 95460782.

It is an interprime number because it is at equal distance from previous prime (28706441) and next prime (28706477).

It is not a de Polignac number, because 28706459 - 2¹² = 28702363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28706429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22172 + ... + 23430.

It is an arithmetic number, because the mean of its divisors is an integer number (4820130).

Almost surely, 2^28706459 is an apocalyptic number.

28706459 is a deficient number, since it is larger than the sum of its proper divisors (214321).

28706459 is an equidigital number, since it uses as much as digits as its factorization.

28706459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1561 (or 1410 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 28706459 is about 5357.8408897615. The cubic root of 28706459 is about 306.1915549167.

The spelling of 28706459 in words is "twenty-eight million, seven hundred six thousand, four hundred fifty-nine".