28550640626 has 16 divisors (see below), whose sum is σ = 43581440448. Its totient is φ = 14025394800.

The previous prime is 28550640611. The next prime is 28550640631. The reversal of 28550640626 is 62604605582.

It is a super-3 number, since 3×28550640626³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 445070 + ... + 505161.

It is an arithmetic number, because the mean of its divisors is an integer number (2723840028).

Almost surely, 2^28550640626 is an apocalyptic number.

28550640626 is a deficient number, since it is larger than the sum of its proper divisors (15030799822).

28550640626 is a wasteful number, since it uses less digits than its factorization.

28550640626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950497.

The product of its (nonzero) digits is 691200, while the sum is 44.

The spelling of 28550640626 in words is "twenty-eight billion, five hundred fifty million, six hundred forty thousand, six hundred twenty-six".