28716530 has 16 divisors (see below), whose sum is σ = 52790400. Its totient is φ = 11242032.

The previous prime is 28716517. The next prime is 28716533. The reversal of 28716530 is 3561782.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28716533) 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, 30080 + ... + 31019.

It is an arithmetic number, because the mean of its divisors is an integer number (3299400).

Almost surely, 2^28716530 is an apocalyptic number.

28716530 is a deficient number, since it is larger than the sum of its proper divisors (24073870).

28716530 is a wasteful number, since it uses less digits than its factorization.

28716530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61153.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 28716530 is about 5358.7806448856. The cubic root of 28716530 is about 306.2273574819.

The spelling of 28716530 in words is "twenty-eight million, seven hundred sixteen thousand, five hundred thirty".