28386123 has 16 divisors (see below), whose sum is σ = 38603136. Its totient is φ = 18550080.

The previous prime is 28386121. The next prime is 28386131. The reversal of 28386123 is 32168382.

It is not a de Polignac number, because 28386123 - 2¹ = 28386121 is a prime.

It is a super-2 number, since 2×28386123² = 1611543957942258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28386121) 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, 49428 + ... + 49998.

It is an arithmetic number, because the mean of its divisors is an integer number (2412696).

Almost surely, 2^28386123 is an apocalyptic number.

28386123 is a deficient number, since it is larger than the sum of its proper divisors (10217013).

28386123 is a wasteful number, since it uses less digits than its factorization.

28386123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874.

The product of its digits is 13824, while the sum is 33.

The square root of 28386123 is about 5327.8628923800. The cubic root of 28386123 is about 305.0483592584.

The spelling of 28386123 in words is "twenty-eight million, three hundred eighty-six thousand, one hundred twenty-three".