28005280253 has 8 divisors (see below), whose sum is σ = 28488382560. Its totient is φ = 27522459280.

The previous prime is 28005280243. The next prime is 28005280339. The reversal of 28005280253 is 35208250082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28005280253 - 2⁸ = 28005279997 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 (28005280243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135626 + ... + 272772.

It is an arithmetic number, because the mean of its divisors is an integer number (3561047820).

Almost surely, 2^28005280253 is an apocalyptic number.

It is an amenable number.

28005280253 is a deficient number, since it is larger than the sum of its proper divisors (483102307).

28005280253 is a wasteful number, since it uses less digits than its factorization.

28005280253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140667.

The product of its (nonzero) digits is 38400, while the sum is 35.

The spelling of 28005280253 in words is "twenty-eight billion, five million, two hundred eighty thousand, two hundred fifty-three".