28268660626 has 8 divisors (see below), whose sum is σ = 43098122124. Its totient is φ = 13902619920.

The previous prime is 28268660621. The next prime is 28268660683. The reversal of 28268660626 is 62606686282.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 28262653225 + 6007401 = 168115^2 + 2451^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (28268660621) 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 3 ways as a sum of consecutive naturals, for example, 115855045 + ... + 115855288.

Almost surely, 2^28268660626 is an apocalyptic number.

28268660626 is a deficient number, since it is larger than the sum of its proper divisors (14829461498).

28268660626 is a wasteful number, since it uses less digits than its factorization.

28268660626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231710396.

The product of its (nonzero) digits is 3981312, while the sum is 52.

The spelling of 28268660626 in words is "twenty-eight billion, two hundred sixty-eight million, six hundred sixty thousand, six hundred twenty-six".