28422719 has 8 divisors (see below), whose sum is σ = 31128720. Its totient is φ = 25790976.

The previous prime is 28422707. The next prime is 28422721. The reversal of 28422719 is 91722482.

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 28422719 - 2⁴ = 28422703 is a prime.

It is a super-2 number, since 2×28422719² = 1615701910705922, 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 (28422739) 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, 17762 + ... + 19295.

It is an arithmetic number, because the mean of its divisors is an integer number (3891090).

Almost surely, 2^28422719 is an apocalyptic number.

28422719 is a deficient number, since it is larger than the sum of its proper divisors (2706001).

28422719 is a wasteful number, since it uses less digits than its factorization.

28422719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37129.

The product of its digits is 16128, while the sum is 35.

The square root of 28422719 is about 5331.2961838562. The cubic root of 28422719 is about 305.1793945975.

The spelling of 28422719 in words is "twenty-eight million, four hundred twenty-two thousand, seven hundred nineteen".