28945707 has 16 divisors (see below), whose sum is σ = 46026240. Its totient is φ = 15820992.

The previous prime is 28945687. The next prime is 28945717. The reversal of 28945707 is 70754982.

It is not a de Polignac number, because 28945707 - 2¹¹ = 28943659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28945717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29482 + ... + 30447.

It is an arithmetic number, because the mean of its divisors is an integer number (2876640).

Almost surely, 2^28945707 is an apocalyptic number.

28945707 is a deficient number, since it is larger than the sum of its proper divisors (17080533).

28945707 is a wasteful number, since it uses less digits than its factorization.

28945707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59962.

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 28945707 is about 5380.1214670303. The cubic root of 28945707 is about 307.0398325664.

The spelling of 28945707 in words is "twenty-eight million, nine hundred forty-five thousand, seven hundred seven".