28006125 has 64 divisors (see below), whose sum is σ = 54632448. Its totient is φ = 12475200.

The previous prime is 28006093. The next prime is 28006129. The reversal of 28006125 is 52160082.

It is not a de Polignac number, because 28006125 - 2⁵ = 28006093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28006095 and 28006104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28006129) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 123262 + ... + 123488.

It is an arithmetic number, because the mean of its divisors is an integer number (853632).

Almost surely, 2^28006125 is an apocalyptic number.

28006125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28006125 is a deficient number, since it is larger than the sum of its proper divisors (26626323).

28006125 is a wasteful number, since it uses less digits than its factorization.

28006125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299 (or 289 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 28006125 is about 5292.0813485811. The cubic root of 28006125 is about 303.6810373678.

The spelling of 28006125 in words is "twenty-eight million, six thousand, one hundred twenty-five".