8267777628 has 96 divisors (see below), whose sum is σ = 21286164480. Its totient is φ = 2476880640.

The previous prime is 8267777621. The next prime is 8267777653.

It is a happy number.

8267777628 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×8267777628² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8267777621) 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 31 ways as a sum of consecutive naturals, for example, 4620558 + ... + 4622346.

It is an arithmetic number, because the mean of its divisors is an integer number (221730880).

Almost surely, 2^8267777628 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8267777628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10643082240).

8267777628 is an abundant number, since it is smaller than the sum of its proper divisors (13018386852).

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

8267777628 is a wasteful number, since it uses less digits than its factorization.

8267777628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2187 (or 2185 counting only the distinct ones).

The product of its digits is 22127616, while the sum is 60.

The square root of 8267777628 is about 90927.3205807803. The cubic root of 8267777628 is about 2022.0703561494.

The spelling of 8267777628 in words is "eight billion, two hundred sixty-seven million, seven hundred seventy-seven thousand, six hundred twenty-eight".