28851123 has 16 divisors (see below), whose sum is σ = 44199936. Its totient is φ = 16397760.

The previous prime is 28851107. The next prime is 28851127. The reversal of 28851123 is 32115882.

It is not a de Polignac number, because 28851123 - 2⁴ = 28851107 is a prime.

It is a super-2 number, since 2×28851123² = 1664774596722258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28851127) 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, 415 + ... + 7607.

It is an arithmetic number, because the mean of its divisors is an integer number (2762496).

Almost surely, 2^28851123 is an apocalyptic number.

28851123 is a deficient number, since it is larger than the sum of its proper divisors (15348813).

28851123 is a wasteful number, since it uses less digits than its factorization.

28851123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7394.

The product of its digits is 3840, while the sum is 30.

The square root of 28851123 is about 5371.3241384225. The cubic root of 28851123 is about 306.7050362881.

The spelling of 28851123 in words is "twenty-eight million, eight hundred fifty-one thousand, one hundred twenty-three".