28339507 has 8 divisors (see below), whose sum is σ = 34092800. Its totient is φ = 23012424.

The previous prime is 28339499. The next prime is 28339513. The reversal of 28339507 is 70593382.

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 28339507 - 2³ = 28339499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28339567) 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 7 ways as a sum of consecutive naturals, for example, 106407 + ... + 106672.

It is an arithmetic number, because the mean of its divisors is an integer number (4261600).

Almost surely, 2^28339507 is an apocalyptic number.

28339507 is a deficient number, since it is larger than the sum of its proper divisors (5753293).

28339507 is a wasteful number, since it uses less digits than its factorization.

28339507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213105.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 28339507 is about 5323.4863576420. The cubic root of 28339507 is about 304.8812831889.

The spelling of 28339507 in words is "twenty-eight million, three hundred thirty-nine thousand, five hundred seven".