28132719 has 8 divisors (see below), whose sum is σ = 37564800. Its totient is φ = 18727896.

The previous prime is 28132661. The next prime is 28132721. The reversal of 28132719 is 91723182.

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

It is not a de Polignac number, because 28132719 - 2¹² = 28128623 is a prime.

It is a super-2 number, since 2×28132719² = 1582899756665922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28132719.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28132729) 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, 4269 + ... + 8630.

It is an arithmetic number, because the mean of its divisors is an integer number (4695600).

Almost surely, 2^28132719 is an apocalyptic number.

28132719 is a deficient number, since it is larger than the sum of its proper divisors (9432081).

28132719 is a wasteful number, since it uses less digits than its factorization.

28132719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13629.

The product of its digits is 6048, while the sum is 33.

The square root of 28132719 is about 5304.0285632715. The cubic root of 28132719 is about 304.1379185774.

The spelling of 28132719 in words is "twenty-eight million, one hundred thirty-two thousand, seven hundred nineteen".