28941319 has 4 divisors (see below), whose sum is σ = 31572360. Its totient is φ = 26310280.

The previous prime is 28941317. The next prime is 28941359. The reversal of 28941319 is 91314982.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28941319 - 2¹ = 28941317 is a prime.

It is a super-2 number, since 2×28941319² = 1675199890919522, 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 (28941317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1315504 + ... + 1315525.

It is an arithmetic number, because the mean of its divisors is an integer number (7893090).

Almost surely, 2^28941319 is an apocalyptic number.

28941319 is a deficient number, since it is larger than the sum of its proper divisors (2631041).

28941319 is a wasteful number, since it uses less digits than its factorization.

28941319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2631040.

The product of its digits is 15552, while the sum is 37.

The square root of 28941319 is about 5379.7136540898. The cubic root of 28941319 is about 307.0243166343.

The spelling of 28941319 in words is "twenty-eight million, nine hundred forty-one thousand, three hundred nineteen".