28707955 has 8 divisors (see below), whose sum is σ = 36262800. Its totient is φ = 21757536.

The previous prime is 28707947. The next prime is 28707977. The reversal of 28707955 is 55970782.

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 28707955 - 2³ = 28707947 is a prime.

It is an unprimeable number.

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, 151000 + ... + 151189.

It is an arithmetic number, because the mean of its divisors is an integer number (4532850).

Almost surely, 2^28707955 is an apocalyptic number.

28707955 is a deficient number, since it is larger than the sum of its proper divisors (7554845).

28707955 is a wasteful number, since it uses less digits than its factorization.

28707955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302213.

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

The square root of 28707955 is about 5357.9804964184. The cubic root of 28707955 is about 306.1968737500.

The spelling of 28707955 in words is "twenty-eight million, seven hundred seven thousand, nine hundred fifty-five".