6440272022 has 8 divisors (see below), whose sum is σ = 9921500256. Its totient is φ = 3133105272.

The previous prime is 6440272019. The next prime is 6440272031. The reversal of 6440272022 is 2202720446.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43515278 + ... + 43515425.

It is an arithmetic number, because the mean of its divisors is an integer number (1240187532).

Almost surely, 2^6440272022 is an apocalyptic number.

6440272022 is a deficient number, since it is larger than the sum of its proper divisors (3481228234).

6440272022 is a wasteful number, since it uses less digits than its factorization.

6440272022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87030742.

The product of its (nonzero) digits is 10752, while the sum is 29.

The square root of 6440272022 is about 80251.3054224042. The cubic root of 6440272022 is about 1860.5216887511.

Adding to 6440272022 its reverse (2202720446), we get a palindrome (8642992468).

The spelling of 6440272022 in words is "six billion, four hundred forty million, two hundred seventy-two thousand, twenty-two".