28894519 has 8 divisors (see below), whose sum is σ = 29585088. Its totient is φ = 28207200.

The previous prime is 28894513. The next prime is 28894529. The reversal of 28894519 is 91549882.

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 28894519 - 2⁷ = 28894391 is a prime.

It is a super-2 number, since 2×28894519² = 1669786456482722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28894513) 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, 32509 + ... + 33385.

It is an arithmetic number, because the mean of its divisors is an integer number (3698136).

Almost surely, 2^28894519 is an apocalyptic number.

28894519 is a deficient number, since it is larger than the sum of its proper divisors (690569).

28894519 is an equidigital number, since it uses as much as digits as its factorization.

28894519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1625.

The product of its digits is 207360, while the sum is 46.

The square root of 28894519 is about 5375.3622203532. The cubic root of 28894519 is about 306.8587345698.

The spelling of 28894519 in words is "twenty-eight million, eight hundred ninety-four thousand, five hundred nineteen".