3840681720 has 64 divisors (see below), whose sum is σ = 11542500000. Its totient is φ = 1022363648.

The previous prime is 3840681673. The next prime is 3840681721. The reversal of 3840681720 is 271860483.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3840681721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40156 + ... + 96404.

Almost surely, 2^3840681720 is an apocalyptic number.

3840681720 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3840681720 is an abundant number, since it is smaller than the sum of its proper divisors (7701818280).

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

3840681720 is a wasteful number, since it uses less digits than its factorization.

3840681720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56832 (or 56828 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 3840681720 is about 61973.2338998055. The cubic root of 3840681720 is about 1566.0397191637.

The spelling of 3840681720 in words is "three billion, eight hundred forty million, six hundred eighty-one thousand, seven hundred twenty".