28152719 has 8 divisors (see below), whose sum is σ = 32208000. Its totient is φ = 24105816.

The previous prime is 28152701. The next prime is 28152721. The reversal of 28152719 is 91725182.

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

It is not a de Polignac number, because 28152719 - 2¹² = 28148623 is a prime.

It is a super-2 number, since 2×28152719² = 1585151174185922, 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 (28152779) 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, 9152 + ... + 11834.

It is an arithmetic number, because the mean of its divisors is an integer number (4026000).

Almost surely, 2^28152719 is an apocalyptic number.

28152719 is a deficient number, since it is larger than the sum of its proper divisors (4055281).

28152719 is a wasteful number, since it uses less digits than its factorization.

28152719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4189.

The product of its digits is 10080, while the sum is 35.

The square root of 28152719 is about 5305.9135876869. The cubic root of 28152719 is about 304.2099736756.

The spelling of 28152719 in words is "twenty-eight million, one hundred fifty-two thousand, seven hundred nineteen".