28052999 has 4 divisors (see below), whose sum is σ = 30210936. Its totient is φ = 25895064.

The previous prime is 28052963. The next prime is 28053001. The reversal of 28052999 is 99925082.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 28052999 - 2¹² = 28048903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28052909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1078949 + ... + 1078974.

It is an arithmetic number, because the mean of its divisors is an integer number (7552734).

Almost surely, 2^28052999 is an apocalyptic number.

28052999 is a deficient number, since it is larger than the sum of its proper divisors (2157937).

28052999 is a wasteful number, since it uses less digits than its factorization.

28052999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2157936.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 28052999 is about 5296.5081893640. The cubic root of 28052999 is about 303.8503671214.

The spelling of 28052999 in words is "twenty-eight million, fifty-two thousand, nine hundred ninety-nine".