28459669 has 4 divisors (see below), whose sum is σ = 32525344. Its totient is φ = 24393996.

The previous prime is 28459667. The next prime is 28459681. The reversal of 28459669 is 96695482.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28459669 - 2¹ = 28459667 is a prime.

It is a super-2 number, since 2×28459669² = 1619905519179122, 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 (28459661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2032827 + ... + 2032840.

It is an arithmetic number, because the mean of its divisors is an integer number (8131336).

Almost surely, 2^28459669 is an apocalyptic number.

It is an amenable number.

28459669 is a deficient number, since it is larger than the sum of its proper divisors (4065675).

28459669 is an equidigital number, since it uses as much as digits as its factorization.

28459669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4065674.

The product of its digits is 933120, while the sum is 49.

The square root of 28459669 is about 5334.7604444811. The cubic root of 28459669 is about 305.3115834012.

The spelling of 28459669 in words is "twenty-eight million, four hundred fifty-nine thousand, six hundred sixty-nine".