28026719 has 8 divisors (see below), whose sum is σ = 33423360. Its totient is φ = 22978296.

The previous prime is 28026707. The next prime is 28026721. The reversal of 28026719 is 91762082.

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 28026719 - 2¹² = 28022623 is a prime.

It is a super-2 number, since 2×28026719² = 1570993955809922, 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 (28026749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86879 + ... + 87200.

It is an arithmetic number, because the mean of its divisors is an integer number (4177920).

Almost surely, 2^28026719 is an apocalyptic number.

28026719 is a deficient number, since it is larger than the sum of its proper divisors (5396641).

28026719 is a wasteful number, since it uses less digits than its factorization.

28026719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174109.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 28026719 is about 5294.0267283043. The cubic root of 28026719 is about 303.7554553148.

The spelling of 28026719 in words is "twenty-eight million, twenty-six thousand, seven hundred nineteen".