28530927 has 16 divisors (see below), whose sum is σ = 43169280. Its totient is φ = 18615096.

The previous prime is 28530917. The next prime is 28530937. The reversal of 28530927 is 72903582.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28530917) and next prime (28530937).

It is not a de Polignac number, because 28530927 - 2⁴ = 28530911 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28530891 and 28530900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28530917) 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, 9973 + ... + 12510.

It is an arithmetic number, because the mean of its divisors is an integer number (2698080).

Almost surely, 2^28530927 is an apocalyptic number.

28530927 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

28530927 is a deficient number, since it is larger than the sum of its proper divisors (14638353).

28530927 is a wasteful number, since it uses less digits than its factorization.

28530927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22539 (or 22533 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 28530927 is about 5341.4349195698. The cubic root of 28530927 is about 305.5661865074.

The spelling of 28530927 in words is "twenty-eight million, five hundred thirty thousand, nine hundred twenty-seven".