8103721628 has 18 divisors (see below), whose sum is σ = 14342702136. Its totient is φ = 4006318624.

The previous prime is 8103721621. The next prime is 8103721631. The reversal of 8103721628 is 8261273018.

It is a super-2 number, since 2×8103721628² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8103721591 and 8103721600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8103721621) 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 5 ways as a sum of consecutive naturals, for example, 96200 + ... + 159567.

Almost surely, 2^8103721628 is an apocalyptic number.

It is an amenable number.

8103721628 is a deficient number, since it is larger than the sum of its proper divisors (6238980508).

8103721628 is a wasteful number, since it uses less digits than its factorization.

8103721628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255949 (or 255858 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 8103721628 is about 90020.6733367397. The cubic root of 8103721628 is about 2008.6063809805.

The spelling of 8103721628 in words is "eight billion, one hundred three million, seven hundred twenty-one thousand, six hundred twenty-eight".