3871742724 has 36 divisors (see below), whose sum is σ = 10362607164. Its totient is φ = 1214664192.

The previous prime is 3871742723. The next prime is 3871742731. The reversal of 3871742724 is 4272471783.

It can be written as a sum of positive squares in 2 ways, for example, as 2660702724 + 1211040000 = 51582^2 + 34800^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 3871742724.

It is not an unprimeable number, because it can be changed into a prime (3871742723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3162577 + ... + 3163800.

It is an arithmetic number, because the mean of its divisors is an integer number (287850199).

Almost surely, 2^3871742724 is an apocalyptic number.

3871742724 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

3871742724 is an abundant number, since it is smaller than the sum of its proper divisors (6490864440).

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

3871742724 is a wasteful number, since it uses less digits than its factorization.

3871742724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6326404 (or 6326399 counting only the distinct ones).

The product of its digits is 526848, while the sum is 45.

The square root of 3871742724 is about 62223.3294191174. The cubic root of 3871742724 is about 1570.2501020148.

The spelling of 3871742724 in words is "three billion, eight hundred seventy-one million, seven hundred forty-two thousand, seven hundred twenty-four".