3648340872 has 64 divisors (see below), whose sum is σ = 11055585600. Its totient is φ = 1105557120.

The previous prime is 3648340867. The next prime is 3648340873. The reversal of 3648340872 is 2780438463.

It is a super-2 number, since 2×3648340872² = 26620782236611440768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3648340873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 765373 + ... + 770124.

It is an arithmetic number, because the mean of its divisors is an integer number (172743525).

Almost surely, 2^3648340872 is an apocalyptic number.

It is an amenable number.

3648340872 is an abundant number, since it is smaller than the sum of its proper divisors (7407244728).

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

3648340872 is a wasteful number, since it uses less digits than its factorization.

3648340872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1535523 (or 1535513 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The square root of 3648340872 is about 60401.4972662102. The cubic root of 3648340872 is about 1539.4483986152.

The spelling of 3648340872 in words is "three billion, six hundred forty-eight million, three hundred forty thousand, eight hundred seventy-two".