28419 has 4 divisors (see below), whose sum is σ = 37896. Its totient is φ = 18944.

The previous prime is 28411. The next prime is 28429. The reversal of 28419 is 91482.

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 28419 - 2³ = 28411 is a prime.

It is a super-2 number, since 2×28419² = 1615279122, which contains 22 as substring.

It is a D-number.

It is a plaindrome in base 7.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (28411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4734 + ... + 4739.

It is an arithmetic number, because the mean of its divisors is an integer number (9474).

2²⁸⁴¹⁹ is an apocalyptic number.

28419 is a deficient number, since it is larger than the sum of its proper divisors (9477).

28419 is an equidigital number, since it uses as much as digits as its factorization.

28419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9476.

The product of its digits is 576, while the sum is 24.

The square root of 28419 is about 168.5793581670. The cubic root of 28419 is about 30.5166083513.

It can be divided in two parts, 2841 and 9, that added together give a triangular number (2850 = T₇₅).

The spelling of 28419 in words is "twenty-eight thousand, four hundred nineteen".