28626573066 has 32 divisors (see below), whose sum is σ = 70465411968. Its totient is φ = 7549865280.

The previous prime is 28626573047. The next prime is 28626573067. The reversal of 28626573066 is 66037562682.

It is not an unprimeable number, because it can be changed into a prime (28626573067) 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 15 ways as a sum of consecutive naturals, for example, 26214265 + ... + 26215356.

It is an arithmetic number, because the mean of its divisors is an integer number (2202044124).

Almost surely, 2^28626573066 is an apocalyptic number.

28626573066 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28626573066 is an abundant number, since it is smaller than the sum of its proper divisors (41838838902).

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

28626573066 is a wasteful number, since it uses less digits than its factorization.

28626573066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52429646.

The product of its (nonzero) digits is 4354560, while the sum is 51.

The spelling of 28626573066 in words is "twenty-eight billion, six hundred twenty-six million, five hundred seventy-three thousand, sixty-six".