28068053 has 4 divisors (see below), whose sum is σ = 30227148. Its totient is φ = 25908960.

The previous prime is 28068049. The next prime is 28068059. The reversal of 28068053 is 35086082.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13490929 + 14577124 = 3673^2 + 3818^2 .

It is a cyclic number.

It is not a de Polignac number, because 28068053 - 2² = 28068049 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 (28068059) 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, 1079528 + ... + 1079553.

It is an arithmetic number, because the mean of its divisors is an integer number (7556787).

Almost surely, 2^28068053 is an apocalyptic number.

It is an amenable number.

28068053 is a deficient number, since it is larger than the sum of its proper divisors (2159095).

28068053 is a wasteful number, since it uses less digits than its factorization.

28068053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2159094.

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

The square root of 28068053 is about 5297.9291237237. The cubic root of 28068053 is about 303.9047088511.

The spelling of 28068053 in words is "twenty-eight million, sixty-eight thousand, fifty-three".