28702324285 has 8 divisors (see below), whose sum is σ = 34460135136. Its totient is φ = 22950295440.

The previous prime is 28702324283. The next prime is 28702324337. The reversal of 28702324285 is 58242320782.

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

It is not a de Polignac number, because 28702324285 - 2¹ = 28702324283 is a prime.

It is a super-2 number, since 2×28702324285² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28702324283) 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, 1434571 + ... + 1454440.

It is an arithmetic number, because the mean of its divisors is an integer number (4307516892).

Almost surely, 2^28702324285 is an apocalyptic number.

It is an amenable number.

28702324285 is a deficient number, since it is larger than the sum of its proper divisors (5757810851).

28702324285 is a wasteful number, since it uses less digits than its factorization.

28702324285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2891003.

The product of its (nonzero) digits is 430080, while the sum is 43.

The spelling of 28702324285 in words is "twenty-eight billion, seven hundred two million, three hundred twenty-four thousand, two hundred eighty-five".