6448206040 has 32 divisors (see below), whose sum is σ = 14845873680. Its totient is φ = 2519298432.

The previous prime is 6448205909. The next prime is 6448206041. The reversal of 6448206040 is 406028446.

It is a happy number.

It is a super-2 number, since 2×6448206040² = 83158722268584963200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6448205987 and 6448206005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6448206041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1872759 + ... + 1876198.

Almost surely, 2^6448206040 is an apocalyptic number.

It is an amenable number.

6448206040 is an abundant number, since it is smaller than the sum of its proper divisors (8397667640).

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

6448206040 is a wasteful number, since it uses less digits than its factorization.

6448206040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3749011 (or 3749007 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 34.

The square root of 6448206040 is about 80300.7225372225. The cubic root of 6448206040 is about 1861.2853912234.

The spelling of 6448206040 in words is "six billion, four hundred forty-eight million, two hundred six thousand, forty".