6440461028 has 48 divisors (see below), whose sum is σ = 11665731840. Its totient is φ = 3109908384.

The previous prime is 6440461003. The next prime is 6440461031. The reversal of 6440461028 is 8201640446.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3090875 + ... + 3092957.

It is an arithmetic number, because the mean of its divisors is an integer number (243036080).

Almost surely, 2^6440461028 is an apocalyptic number.

It is an amenable number.

6440461028 is a deficient number, since it is larger than the sum of its proper divisors (5225270812).

6440461028 is a wasteful number, since it uses less digits than its factorization.

6440461028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2376 (or 2374 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 6440461028 is about 80252.4830020854. The cubic root of 6440461028 is about 1860.5398891377.

The spelling of 6440461028 in words is "six billion, four hundred forty million, four hundred sixty-one thousand, twenty-eight".