6400013208 has 32 divisors (see below), whose sum is σ = 16092529200. Its totient is φ = 2121004928.

The previous prime is 6400013131. The next prime is 6400013233. The reversal of 6400013208 is 8023100046.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 766563 + ... + 774866.

Almost surely, 2^6400013208 is an apocalyptic number.

It is an amenable number.

6400013208 is an abundant number, since it is smaller than the sum of its proper divisors (9692515992).

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

6400013208 is a wasteful number, since it uses less digits than its factorization.

6400013208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1541611 (or 1541607 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 6400013208 is about 80000.0825499574. The cubic root of 6400013208 is about 1856.6368106548.

The spelling of 6400013208 in words is "six billion, four hundred million, thirteen thousand, two hundred eight".