28375419 has 4 divisors (see below), whose sum is σ = 37833896. Its totient is φ = 18916944.

The previous prime is 28375393. The next prime is 28375421. The reversal of 28375419 is 91457382.

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

It is not a de Polignac number, because 28375419 - 2²⁰ = 27326843 is a prime.

It is a super-2 number, since 2×28375419² = 1610328806851122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28375469) 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, 4729234 + ... + 4729239.

It is an arithmetic number, because the mean of its divisors is an integer number (9458474).

Almost surely, 2^28375419 is an apocalyptic number.

28375419 is a deficient number, since it is larger than the sum of its proper divisors (9458477).

28375419 is an equidigital number, since it uses as much as digits as its factorization.

28375419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9458476.

The product of its digits is 60480, while the sum is 39.

The square root of 28375419 is about 5326.8582673092. The cubic root of 28375419 is about 305.0100113170.

It can be divided in two parts, 2837 and 5419, that added together give a triangular number (8256 = T₁₂₈).

The spelling of 28375419 in words is "twenty-eight million, three hundred seventy-five thousand, four hundred nineteen".