641272000 has 112 divisors (see below), whose sum is σ = 1611904320. Its totient is φ = 252672000.

The previous prime is 641271991. The next prime is 641272001. The reversal of 641272000 is 272146.

It is a super-2 number, since 2×641272000² = 822459555968000000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (641272001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 567436 + ... + 568564.

Almost surely, 2^641272000 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 641272000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (805952160).

641272000 is an abundant number, since it is smaller than the sum of its proper divisors (970632320).

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

641272000 is a wasteful number, since it uses less digits than its factorization.

641272000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227 (or 1207 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 641272000 is about 25323.3489096525. The cubic root of 641272000 is about 862.3444233848.

The spelling of 641272000 in words is "six hundred forty-one million, two hundred seventy-two thousand".