28852521 has 4 divisors (see below), whose sum is σ = 38470032. Its totient is φ = 19235012.

The previous prime is 28852517. The next prime is 28852529. The reversal of 28852521 is 12525882.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28852521 - 2² = 28852517 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28852529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4808751 + ... + 4808756.

It is an arithmetic number, because the mean of its divisors is an integer number (9617508).

Almost surely, 2^28852521 is an apocalyptic number.

It is an amenable number.

28852521 is a deficient number, since it is larger than the sum of its proper divisors (9617511).

28852521 is an equidigital number, since it uses as much as digits as its factorization.

28852521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9617510.

The product of its digits is 12800, while the sum is 33.

The square root of 28852521 is about 5371.4542723549. The cubic root of 28852521 is about 306.7099900724.

The spelling of 28852521 in words is "twenty-eight million, eight hundred fifty-two thousand, five hundred twenty-one".