641330272 has 48 divisors (see below), whose sum is σ = 1379769552. Its totient is φ = 291013120.

The previous prime is 641330227. The next prime is 641330279. The reversal of 641330272 is 272033146.

It is a super-2 number, since 2×641330272² = 822609035567187968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 641330272.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641330279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270918 + ... + 273274.

It is an arithmetic number, because the mean of its divisors is an integer number (28745199).

Almost surely, 2^641330272 is an apocalyptic number.

It is an amenable number.

641330272 is an abundant number, since it is smaller than the sum of its proper divisors (738439280).

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

641330272 is a wasteful number, since it uses less digits than its factorization.

641330272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3151 (or 3143 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 641330272 is about 25324.4994422397. The cubic root of 641330272 is about 862.3705428329.

The spelling of 641330272 in words is "six hundred forty-one million, three hundred thirty thousand, two hundred seventy-two".