641528192 has 32 divisors (see below), whose sum is σ = 1305249120. Its totient is φ = 313936384.

The previous prime is 641528177. The next prime is 641528203. The reversal of 641528192 is 291825146.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×641528192² = 823116842261577728, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 47303 + ... + 59334.

It is an arithmetic number, because the mean of its divisors is an integer number (40789035).

Almost surely, 2^641528192 is an apocalyptic number.

It is an amenable number.

641528192 is an abundant number, since it is smaller than the sum of its proper divisors (663720928).

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

641528192 is a wasteful number, since it uses less digits than its factorization.

641528192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106698 (or 106686 counting only the distinct ones).

The product of its digits is 34560, while the sum is 38.

The square root of 641528192 is about 25328.4068192218. The cubic root of 641528192 is about 862.4592453473.

The spelling of 641528192 in words is "six hundred forty-one million, five hundred twenty-eight thousand, one hundred ninety-two".