641852272 has 80 divisors (see below), whose sum is σ = 1370483712. Its totient is φ = 289889280.

The previous prime is 641852269. The next prime is 641852287. The reversal of 641852272 is 272258146.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1374183 + ... + 1374649.

Almost surely, 2^641852272 is an apocalyptic number.

641852272 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 641852272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (685241856).

641852272 is an abundant number, since it is smaller than the sum of its proper divisors (728631440).

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

641852272 is a wasteful number, since it uses less digits than its factorization.

641852272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686 (or 680 counting only the distinct ones).

The product of its digits is 53760, while the sum is 37.

The square root of 641852272 is about 25334.8035713719. The cubic root of 641852272 is about 862.6044500543.

The spelling of 641852272 in words is "six hundred forty-one million, eight hundred fifty-two thousand, two hundred seventy-two".