28167123 has 16 divisors (see below), whose sum is σ = 39011616. Its totient is φ = 18063360.

The previous prime is 28167121. The next prime is 28167169. The reversal of 28167123 is 32176182.

It is not a de Polignac number, because 28167123 - 2¹ = 28167121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28167121) 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, 7411 + ... + 10547.

It is an arithmetic number, because the mean of its divisors is an integer number (2438226).

Almost surely, 2^28167123 is an apocalyptic number.

28167123 is a deficient number, since it is larger than the sum of its proper divisors (10844493).

28167123 is a wasteful number, since it uses less digits than its factorization.

28167123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3254.

The product of its digits is 4032, while the sum is 30.

The square root of 28167123 is about 5307.2707675414. The cubic root of 28167123 is about 304.2618466211.

The spelling of 28167123 in words is "twenty-eight million, one hundred sixty-seven thousand, one hundred twenty-three".