28913183 has 8 divisors (see below), whose sum is σ = 31564848. Its totient is φ = 26322624.

The previous prime is 28913179. The next prime is 28913189. The reversal of 28913183 is 38131982.

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 28913183 - 2² = 28913179 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28913189) 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, 14285 + ... + 16182.

It is an arithmetic number, because the mean of its divisors is an integer number (3945606).

Almost surely, 2^28913183 is an apocalyptic number.

28913183 is a deficient number, since it is larger than the sum of its proper divisors (2651665).

28913183 is a wasteful number, since it uses less digits than its factorization.

28913183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30553.

The product of its digits is 10368, while the sum is 35.

The square root of 28913183 is about 5377.0980091495. The cubic root of 28913183 is about 306.9247906816.

The spelling of 28913183 in words is "twenty-eight million, nine hundred thirteen thousand, one hundred eighty-three".