3872720847 has 32 divisors (see below), whose sum is σ = 5674001920. Its totient is φ = 2340731520.

The previous prime is 3872720837. The next prime is 3872720881. The reversal of 3872720847 is 7480272783.

It is not a de Polignac number, because 3872720847 - 2¹¹ = 3872718799 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3872720796 and 3872720805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3872720837) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 113598 + ... + 143700.

It is an arithmetic number, because the mean of its divisors is an integer number (177312560).

Almost surely, 2^3872720847 is an apocalyptic number.

3872720847 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

3872720847 is a deficient number, since it is larger than the sum of its proper divisors (1801281073).

3872720847 is a wasteful number, since it uses less digits than its factorization.

3872720847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30223.

The product of its (nonzero) digits is 1053696, while the sum is 48.

The square root of 3872720847 is about 62231.1886998794. The cubic root of 3872720847 is about 1570.3823222689.

The spelling of 3872720847 in words is "three billion, eight hundred seventy-two million, seven hundred twenty thousand, eight hundred forty-seven".