28941559 has 4 divisors (see below), whose sum is σ = 28974240. Its totient is φ = 28908880.

The previous prime is 28941557. The next prime is 28941589. The reversal of 28941559 is 95514982.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28941559 - 2¹ = 28941557 is a prime.

It is a super-2 number, since 2×28941559² = 1675227674700962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28941553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14974 + ... + 16795.

It is an arithmetic number, because the mean of its divisors is an integer number (7243560).

Almost surely, 2^28941559 is an apocalyptic number.

28941559 is a deficient number, since it is larger than the sum of its proper divisors (32681).

28941559 is an equidigital number, since it uses as much as digits as its factorization.

28941559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32680.

The product of its digits is 129600, while the sum is 43.

The square root of 28941559 is about 5379.7359600635. The cubic root of 28941559 is about 307.0251653129.

The spelling of 28941559 in words is "twenty-eight million, nine hundred forty-one thousand, five hundred fifty-nine".