280133626828 has 12 divisors (see below), whose sum is σ = 534800560392. Its totient is φ = 127333466720.

The previous prime is 280133626823. The next prime is 280133626831. The reversal of 280133626828 is 828626331082.

It is a super-2 number, since 2×280133626828² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (280133626823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3183336625 + ... + 3183336712.

It is an arithmetic number, because the mean of its divisors is an integer number (44566713366).

Almost surely, 2^280133626828 is an apocalyptic number.

It is an amenable number.

280133626828 is a deficient number, since it is larger than the sum of its proper divisors (254666933564).

280133626828 is a wasteful number, since it uses less digits than its factorization.

280133626828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6366673352 (or 6366673350 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 49.

The spelling of 280133626828 in words is "two hundred eighty billion, one hundred thirty-three million, six hundred twenty-six thousand, eight hundred twenty-eight".