6440786282 has 24 divisors (see below), whose sum is σ = 11477640384. Its totient is φ = 2701604472.

The previous prime is 6440786279. The next prime is 6440786293. The reversal of 6440786282 is 2826870446.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 694568 + ... + 703779.

It is an arithmetic number, because the mean of its divisors is an integer number (478235016).

Almost surely, 2^6440786282 is an apocalyptic number.

6440786282 is a deficient number, since it is larger than the sum of its proper divisors (5036854102).

6440786282 is a wasteful number, since it uses less digits than its factorization.

6440786282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1398410 (or 1398403 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 47.

The square root of 6440786282 is about 80254.5094184744. The cubic root of 6440786282 is about 1860.5712087307.

The spelling of 6440786282 in words is "six billion, four hundred forty million, seven hundred eighty-six thousand, two hundred eighty-two".