628936639826 has 32 divisors (see below), whose sum is σ = 1036260086400. Its totient is φ = 283911241600.

The previous prime is 628936639823. The next prime is 628936639853.

628936639826 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×628936639826² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (628936639823) 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 15 ways as a sum of consecutive naturals, for example, 23348846 + ... + 23375766.

It is an arithmetic number, because the mean of its divisors is an integer number (32383127700).

Almost surely, 2^628936639826 is an apocalyptic number.

628936639826 is a deficient number, since it is larger than the sum of its proper divisors (407323446574).

628936639826 is a wasteful number, since it uses less digits than its factorization.

628936639826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34210.

The product of its digits is 241864704, while the sum is 68.

The spelling of 628936639826 in words is "six hundred twenty-eight billion, nine hundred thirty-six million, six hundred thirty-nine thousand, eight hundred twenty-six".