28531027 has 8 divisors (see below), whose sum is σ = 34323200. Its totient is φ = 23167944.

The previous prime is 28530979. The next prime is 28531051. The reversal of 28531027 is 72013582.

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

It is a cyclic number.

It is not a de Polignac number, because 28531027 - 2⁷ = 28530899 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28530986 and 28531004.

It is not an unprimeable number, because it can be changed into a prime (28531057) 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, 107127 + ... + 107392.

It is an arithmetic number, because the mean of its divisors is an integer number (4290400).

Almost surely, 2^28531027 is an apocalyptic number.

28531027 is a deficient number, since it is larger than the sum of its proper divisors (5792173).

28531027 is a wasteful number, since it uses less digits than its factorization.

28531027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214545.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 28531027 is about 5341.4442803422. Note that the first 3 decimals coincide. The cubic root of 28531027 is about 305.5665435069.

The spelling of 28531027 in words is "twenty-eight million, five hundred thirty-one thousand, twenty-seven".