28626612275 has 6 divisors (see below), whose sum is σ = 35496999252. Its totient is φ = 22901289800.

The previous prime is 28626612271. The next prime is 28626612293. The reversal of 28626612275 is 57221662682.

It is a happy number.

It is not a de Polignac number, because 28626612275 - 2² = 28626612271 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28626612271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 572532221 + ... + 572532270.

It is an arithmetic number, because the mean of its divisors is an integer number (5916166542).

Almost surely, 2^28626612275 is an apocalyptic number.

28626612275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28626612275 is a deficient number, since it is larger than the sum of its proper divisors (6870386977).

28626612275 is a wasteful number, since it uses less digits than its factorization.

28626612275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145064501 (or 1145064496 counting only the distinct ones).

The product of its digits is 967680, while the sum is 47.

The spelling of 28626612275 in words is "twenty-eight billion, six hundred twenty-six million, six hundred twelve thousand, two hundred seventy-five".