28708119 has 24 divisors (see below), whose sum is σ = 45411600. Its totient is φ = 17331840.

The previous prime is 28708111. The next prime is 28708181. The reversal of 28708119 is 91180782.

It is not a de Polignac number, because 28708119 - 2³ = 28708111 is a prime.

It is a super-2 number, since 2×28708119² = 1648312193036322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28708111) 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 23 ways as a sum of consecutive naturals, for example, 40137 + ... + 40845.

It is an arithmetic number, because the mean of its divisors is an integer number (1892150).

Almost surely, 2^28708119 is an apocalyptic number.

28708119 is a deficient number, since it is larger than the sum of its proper divisors (16703481).

28708119 is a wasteful number, since it uses less digits than its factorization.

28708119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135 (or 1132 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The square root of 28708119 is about 5357.9958006702. The cubic root of 28708119 is about 306.1974568194.

The spelling of 28708119 in words is "twenty-eight million, seven hundred eight thousand, one hundred nineteen".