28130419 has 8 divisors (see below), whose sum is σ = 28839888. Its totient is φ = 27429600.

The previous prime is 28130411. The next prime is 28130437. The reversal of 28130419 is 91403182.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 28130419 - 2³ = 28130411 is a prime.

It is a super-2 number, since 2×28130419² = 1582640946231122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28130411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4689 + ... + 8845.

It is an arithmetic number, because the mean of its divisors is an integer number (3604986).

Almost surely, 2^28130419 is an apocalyptic number.

28130419 is a deficient number, since it is larger than the sum of its proper divisors (709469).

28130419 is a wasteful number, since it uses less digits than its factorization.

28130419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4325.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 28130419 is about 5303.8117425112. The cubic root of 28130419 is about 304.1296300519.

The spelling of 28130419 in words is "twenty-eight million, one hundred thirty thousand, four hundred nineteen".