628787222787826 has 16 divisors (see below), whose sum is σ = 992889027768960. Its totient is φ = 297826450099920.

The previous prime is 628787222787821. The next prime is 628787222787827.

628787222787826 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 628787222787826.

It is not an unprimeable number, because it can be changed into a prime (628787222787821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 558572410 + ... + 559696981.

It is an arithmetic number, because the mean of its divisors is an integer number (62055564235560).

Almost surely, 2^{628787222787826} is an apocalyptic number.

628787222787826 is a deficient number, since it is larger than the sum of its proper divisors (364101804981134).

628787222787826 is a wasteful number, since it uses less digits than its factorization.

628787222787826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118284209.

The product of its digits is 11329339392, while the sum is 82.

The spelling of 628787222787826 in words is "six hundred twenty-eight trillion, seven hundred eighty-seven billion, two hundred twenty-two million, seven hundred eighty-seven thousand, eight hundred twenty-six".