28643883 has 16 divisors (see below), whose sum is σ = 39442176. Its totient is φ = 18476640.

The previous prime is 28643873. The next prime is 28643897. The reversal of 28643883 is 38834682.

It is not a de Polignac number, because 28643883 - 2⁶ = 28643819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28643843) 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, 22810 + ... + 24032.

It is an arithmetic number, because the mean of its divisors is an integer number (2465136).

Almost surely, 2^28643883 is an apocalyptic number.

28643883 is a deficient number, since it is larger than the sum of its proper divisors (10798293).

28643883 is a wasteful number, since it uses less digits than its factorization.

28643883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1474.

The product of its digits is 221184, while the sum is 42.

The square root of 28643883 is about 5351.9980381162. The cubic root of 28643883 is about 305.9689083707.

The spelling of 28643883 in words is "twenty-eight million, six hundred forty-three thousand, eight hundred eighty-three".