28042419 has 8 divisors (see below), whose sum is σ = 37721232. Its totient is φ = 18529280.

The previous prime is 28042397. The next prime is 28042447. The reversal of 28042419 is 91424082.

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 28042419 - 2⁷ = 28042291 is a prime.

It is a super-2 number, since 2×28042419² = 1572754526743122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28042019) 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, 41022 + ... + 41699.

It is an arithmetic number, because the mean of its divisors is an integer number (4715154).

Almost surely, 2^28042419 is an apocalyptic number.

28042419 is a deficient number, since it is larger than the sum of its proper divisors (9678813).

28042419 is a wasteful number, since it uses less digits than its factorization.

28042419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82837.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 28042419 is about 5295.5093239461. The cubic root of 28042419 is about 303.8121639438.

It can be divided in two parts, 2804 and 2419, that multiplied together give a palindrome (6782876).

The spelling of 28042419 in words is "twenty-eight million, forty-two thousand, four hundred nineteen".