28882530 has 48 divisors (see below), whose sum is σ = 75436920. Its totient is φ = 7666944.

The previous prime is 28882519. The next prime is 28882537. The reversal of 28882530 is 3528882.

It can be written as a sum of positive squares in 4 ways, for example, as 16329681 + 12552849 = 4041^2 + 3543^2 .

It is not an unprimeable number, because it can be changed into a prime (28882537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23614 + ... + 24806.

Almost surely, 2^28882530 is an apocalyptic number.

28882530 is an abundant number, since it is smaller than the sum of its proper divisors (46554390).

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

28882530 is a wasteful number, since it uses less digits than its factorization.

28882530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1475 (or 1472 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 28882530 is about 5374.2469239885. The cubic root of 28882530 is about 306.8162877848.

The spelling of 28882530 in words is "twenty-eight million, eight hundred eighty-two thousand, five hundred thirty".