28955555 has 8 divisors (see below), whose sum is σ = 35554992. Its totient is φ = 22625568.

The previous prime is 28955513. The next prime is 28955569. The reversal of 28955555 is 55555982.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28955555 - 2⁶ = 28955491 is a prime.

It is a Duffinian number.

28955555 is a modest number, since divided by 5555 gives 2895 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67124 + ... + 67553.

It is an arithmetic number, because the mean of its divisors is an integer number (4444374).

Almost surely, 2^28955555 is an apocalyptic number.

28955555 is a deficient number, since it is larger than the sum of its proper divisors (6599437).

28955555 is a wasteful number, since it uses less digits than its factorization.

28955555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134725.

The product of its digits is 450000, while the sum is 44.

The square root of 28955555 is about 5381.0366101709. The cubic root of 28955555 is about 307.0746493059.

The spelling of 28955555 in words is "twenty-eight million, nine hundred fifty-five thousand, five hundred fifty-five".