28755907 has 8 divisors (see below), whose sum is σ = 29809440. Its totient is φ = 27706560.

The previous prime is 28755871. The next prime is 28755967. The reversal of 28755907 is 70955782.

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 28755907 - 2²³ = 20367299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28755967) 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, 21418 + ... + 22720.

It is an arithmetic number, because the mean of its divisors is an integer number (3726180).

Almost surely, 2^28755907 is an apocalyptic number.

28755907 is a deficient number, since it is larger than the sum of its proper divisors (1053533).

28755907 is a wasteful number, since it uses less digits than its factorization.

28755907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2093.

The product of its (nonzero) digits is 176400, while the sum is 43.

The square root of 28755907 is about 5362.4534496814. The cubic root of 28755907 is about 306.3672630493.

The spelling of 28755907 in words is "twenty-eight million, seven hundred fifty-five thousand, nine hundred seven".