28107123 has 8 divisors (see below), whose sum is σ = 40883136. Its totient is φ = 17034600.

The previous prime is 28107113. The next prime is 28107133. The reversal of 28107123 is 32170182.

It is an interprime number because it is at equal distance from previous prime (28107113) and next prime (28107133).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28107123 - 2⁵ = 28107091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28107093 and 28107102.

It is not an unprimeable number, because it can be changed into a prime (28107113) 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, 425833 + ... + 425898.

It is an arithmetic number, because the mean of its divisors is an integer number (5110392).

Almost surely, 2^28107123 is an apocalyptic number.

28107123 is a deficient number, since it is larger than the sum of its proper divisors (12776013).

28107123 is a wasteful number, since it uses less digits than its factorization.

28107123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851745.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 28107123 is about 5301.6151312595. The cubic root of 28107123 is about 304.0456526256.

The spelling of 28107123 in words is "twenty-eight million, one hundred seven thousand, one hundred twenty-three".