28372245448 has 8 divisors (see below), whose sum is σ = 53197960230. Its totient is φ = 14186122720.

The previous prime is 28372245443. The next prime is 28372245521. The reversal of 28372245448 is 84454227382.

It can be written as a sum of positive squares in only one way, i.e., 25218075204 + 3154170244 = 158802^2 + 56162^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (28372245443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1773265333 + ... + 1773265348.

Almost surely, 2^28372245448 is an apocalyptic number.

It is an amenable number.

28372245448 is a deficient number, since it is larger than the sum of its proper divisors (24825714782).

28372245448 is a wasteful number, since it uses less digits than its factorization.

28372245448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3546530687 (or 3546530683 counting only the distinct ones).

The product of its digits is 3440640, while the sum is 49.

The spelling of 28372245448 in words is "twenty-eight billion, three hundred seventy-two million, two hundred forty-five thousand, four hundred forty-eight".