28266933616 has 20 divisors (see below), whose sum is σ = 54782479312. Its totient is φ = 14129519616.

The previous prime is 28266933613. The next prime is 28266933641. The reversal of 28266933616 is 61633966282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28266933613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187185 + ... + 302608.

Almost surely, 2^28266933616 is an apocalyptic number.

It is an amenable number.

28266933616 is a deficient number, since it is larger than the sum of its proper divisors (26515545696).

28266933616 is a wasteful number, since it uses less digits than its factorization.

28266933616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493408 (or 493402 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 52.

The spelling of 28266933616 in words is "twenty-eight billion, two hundred sixty-six million, nine hundred thirty-three thousand, six hundred sixteen".