3721532872 has 16 divisors (see below), whose sum is σ = 6978954060. Its totient is φ = 1860478464.

The previous prime is 3721532833. The next prime is 3721532891. The reversal of 3721532872 is 2782351273.

3721532872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3627171076 + 94361796 = 60226^2 + 9714^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25008 + ... + 89824.

Almost surely, 2^3721532872 is an apocalyptic number.

It is an amenable number.

3721532872 is a deficient number, since it is larger than the sum of its proper divisors (3257421188).

3721532872 is a wasteful number, since it uses less digits than its factorization.

3721532872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72000 (or 71996 counting only the distinct ones).

The product of its digits is 141120, while the sum is 40.

The square root of 3721532872 is about 61004.3676469152. The cubic root of 3721532872 is about 1549.6749747904.

The spelling of 3721532872 in words is "three billion, seven hundred twenty-one million, five hundred thirty-two thousand, eight hundred seventy-two".