28801457293 has 4 divisors (see below), whose sum is σ = 32915951200. Its totient is φ = 24686963388.

The previous prime is 28801457281. The next prime is 28801457317. The reversal of 28801457293 is 39275410882.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28801457293 - 2¹³ = 28801449101 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 (28801457263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2057246943 + ... + 2057246956.

It is an arithmetic number, because the mean of its divisors is an integer number (8228987800).

Almost surely, 2^28801457293 is an apocalyptic number.

It is an amenable number.

28801457293 is a deficient number, since it is larger than the sum of its proper divisors (4114493907).

28801457293 is an equidigital number, since it uses as much as digits as its factorization.

28801457293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4114493906.

The product of its (nonzero) digits is 967680, while the sum is 49.

The spelling of 28801457293 in words is "twenty-eight billion, eight hundred one million, four hundred fifty-seven thousand, two hundred ninety-three".