28030280255256 has 32 divisors (see below), whose sum is σ = 70242151258800. Its totient is φ = 9321233335680.

The previous prime is 28030280255231. The next prime is 28030280255291. The reversal of 28030280255256 is 65255208203082.

It is a super-2 number, since 2×28030280255256² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1387078191 + ... + 1387098398.

Almost surely, 2^{28030280255256} is an apocalyptic number.

It is an amenable number.

28030280255256 is an abundant number, since it is smaller than the sum of its proper divisors (42211871003544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28030280255256 is a wasteful number, since it uses less digits than its factorization.

28030280255256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2774177019 (or 2774177015 counting only the distinct ones).

The product of its (nonzero) digits is 2304000, while the sum is 48.

The spelling of 28030280255256 in words is "twenty-eight trillion, thirty billion, two hundred eighty million, two hundred fifty-five thousand, two hundred fifty-six".