28873700251 has 8 divisors (see below), whose sum is σ = 31529505600. Its totient is φ = 26223048840.

The previous prime is 28873700239. The next prime is 28873700299. The reversal of 28873700251 is 15200737882.

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 28873700251 - 2¹³ = 28873692059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28873700198 and 28873700207.

It is not an unprimeable number, because it can be changed into a prime (28873700351) 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, 1276761 + ... + 1299178.

It is an arithmetic number, because the mean of its divisors is an integer number (3941188200).

Almost surely, 2^28873700251 is an apocalyptic number.

28873700251 is a deficient number, since it is larger than the sum of its proper divisors (2655805349).

28873700251 is a wasteful number, since it uses less digits than its factorization.

28873700251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2576969.

The product of its (nonzero) digits is 188160, while the sum is 43.

The spelling of 28873700251 in words is "twenty-eight billion, eight hundred seventy-three million, seven hundred thousand, two hundred fifty-one".