28296668655 has 48 divisors (see below), whose sum is σ = 52099875360. Its totient is φ = 14571099648.

The previous prime is 28296668651. The next prime is 28296668671. The reversal of 28296668655 is 55686669282.

It is not a de Polignac number, because 28296668655 - 2² = 28296668651 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28296668592 and 28296668601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28296668651) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11082 + ... + 238151.

It is an arithmetic number, because the mean of its divisors is an integer number (1085414070).

Almost surely, 2^28296668655 is an apocalyptic number.

28296668655 is a deficient number, since it is larger than the sum of its proper divisors (23803206705).

28296668655 is a wasteful number, since it uses less digits than its factorization.

28296668655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249305 (or 249270 counting only the distinct ones).

The product of its digits is 74649600, while the sum is 63.

The spelling of 28296668655 in words is "twenty-eight billion, two hundred ninety-six million, six hundred sixty-eight thousand, six hundred fifty-five".