28057053 has 16 divisors (see below), whose sum is σ = 39542720. Its totient is φ = 17646336.

The previous prime is 28057049. The next prime is 28057067. The reversal of 28057053 is 35075082.

It is a happy number.

It is not a de Polignac number, because 28057053 - 2² = 28057049 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28057053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28057553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14901 + ... + 16677.

It is an arithmetic number, because the mean of its divisors is an integer number (2471420).

Almost surely, 2^28057053 is an apocalyptic number.

It is an amenable number.

28057053 is a deficient number, since it is larger than the sum of its proper divisors (11485667).

28057053 is a wasteful number, since it uses less digits than its factorization.

28057053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2076.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 28057053 is about 5296.8908805072. The cubic root of 28057053 is about 303.8650031092.

The spelling of 28057053 in words is "twenty-eight million, fifty-seven thousand, fifty-three".