28000053 has 16 divisors (see below), whose sum is σ = 43665600. Its totient is φ = 17683920.

The previous prime is 28000031. The next prime is 28000061. The reversal of 28000053 is 35000082.

It is not a de Polignac number, because 28000053 - 2¹⁰ = 27999029 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28000073) 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, 26778 + ... + 27803.

It is an arithmetic number, because the mean of its divisors is an integer number (2729100).

Almost surely, 2^28000053 is an apocalyptic number.

It is an amenable number.

28000053 is a deficient number, since it is larger than the sum of its proper divisors (15665547).

28000053 is a wasteful number, since it uses less digits than its factorization.

28000053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54609 (or 54603 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 28000053 is about 5291.5076301561. The cubic root of 28000053 is about 303.6590887817.

The spelling of 28000053 in words is "twenty-eight million, fifty-three", and thus it is an aban number and an uban number.