6440301532 has 12 divisors (see below), whose sum is σ = 12880603120. Its totient is φ = 2760129216.

The previous prime is 6440301529. The next prime is 6440301533. The reversal of 6440301532 is 2351030446.

6440301532 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 230010769 = 6440301532 / (6 + 4 + 4 + 0 + 3 + 0 + 1 + 5 + 3 + 2).

It is a self number, because there is not a number n which added to its sum of digits gives 6440301532.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6440301533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115005357 + ... + 115005412.

Almost surely, 2^6440301532 is an apocalyptic number.

It is an amenable number.

6440301532 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6440301532 is a wasteful number, since it uses less digits than its factorization.

6440301532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230010780 (or 230010778 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 6440301532 is about 80251.4892821311. The cubic root of 6440301532 is about 1860.5245304484.

Adding to 6440301532 its reverse (2351030446), we get a palindrome (8791331978).

The spelling of 6440301532 in words is "six billion, four hundred forty million, three hundred one thousand, five hundred thirty-two".