28530876 has 48 divisors (see below), whose sum is σ = 72955008. Its totient is φ = 8606400.

The previous prime is 28530871. The next prime is 28530877. The reversal of 28530876 is 67803582.

It is a super-3 number, since 3×28530876³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28530871) 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, 43366 + ... + 44018.

It is an arithmetic number, because the mean of its divisors is an integer number (1519896).

Almost surely, 2^28530876 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28530876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36477504).

28530876 is an abundant number, since it is smaller than the sum of its proper divisors (44424132).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28530876 is a wasteful number, since it uses less digits than its factorization.

28530876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002 (or 1000 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 28530876 is about 5341.4301455696. The cubic root of 28530876 is about 305.5660044373.

The spelling of 28530876 in words is "twenty-eight million, five hundred thirty thousand, eight hundred seventy-six".