28252049 has 4 divisors (see below), whose sum is σ = 32288064. Its totient is φ = 24216036.

The previous prime is 28252043. The next prime is 28252051. The reversal of 28252049 is 94025282.

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 28252049 - 2⁴ = 28252033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28252043) 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, 2017997 + ... + 2018010.

It is an arithmetic number, because the mean of its divisors is an integer number (8072016).

Almost surely, 2^28252049 is an apocalyptic number.

It is an amenable number.

28252049 is a deficient number, since it is larger than the sum of its proper divisors (4036015).

28252049 is an equidigital number, since it uses as much as digits as its factorization.

28252049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4036014.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 28252049 is about 5315.2656565782. The cubic root of 28252049 is about 304.5673306116.

The spelling of 28252049 in words is "twenty-eight million, two hundred fifty-two thousand, forty-nine".