28427469 has 8 divisors (see below), whose sum is σ = 43318080. Its totient is φ = 16244256.

The previous prime is 28427459. The next prime is 28427479. The reversal of 28427469 is 96472482.

It is an interprime number because it is at equal distance from previous prime (28427459) and next prime (28427479).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28427469 - 2¹³ = 28419277 is a prime.

It is a super-2 number, since 2×28427469² = 1616241987491922, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28427469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28427419) 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 7 ways as a sum of consecutive naturals, for example, 676824 + ... + 676865.

It is an arithmetic number, because the mean of its divisors is an integer number (5414760).

Almost surely, 2^28427469 is an apocalyptic number.

It is an amenable number.

28427469 is a deficient number, since it is larger than the sum of its proper divisors (14890611).

28427469 is a wasteful number, since it uses less digits than its factorization.

28427469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1353699.

The product of its digits is 193536, while the sum is 42.

The square root of 28427469 is about 5331.7416479046. The cubic root of 28427469 is about 305.1963941602.

The spelling of 28427469 in words is "twenty-eight million, four hundred twenty-seven thousand, four hundred sixty-nine".