28300042772 has 6 divisors (see below), whose sum is σ = 49525074858. Its totient is φ = 14150021384.

The previous prime is 28300042759. The next prime is 28300042867. The reversal of 28300042772 is 27724000382.

It can be written as a sum of positive squares in only one way, i.e., 28299987076 + 55696 = 168226^2 + 236^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3537505343 + ... + 3537505350.

It is an arithmetic number, because the mean of its divisors is an integer number (8254179143).

Almost surely, 2^28300042772 is an apocalyptic number.

It is an amenable number.

28300042772 is a deficient number, since it is larger than the sum of its proper divisors (21225032086).

28300042772 is a wasteful number, since it uses less digits than its factorization.

28300042772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7075010697 (or 7075010695 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 35.

The spelling of 28300042772 in words is "twenty-eight billion, three hundred million, forty-two thousand, seven hundred seventy-two".