3728456172 has 72 divisors (see below), whose sum is σ = 10818298400. Its totient is φ = 1060604928.

The previous prime is 3728456141. The next prime is 3728456177. The reversal of 3728456172 is 2716548273.

3728456172 is a `hidden beast` number, since 3 + 7 + 2 + 84 + 561 + 7 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (3728456177) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25404 + ... + 90012.

Almost surely, 2^3728456172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3728456172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5409149200).

3728456172 is an abundant number, since it is smaller than the sum of its proper divisors (7089842228).

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

3728456172 is a wasteful number, since it uses less digits than its factorization.

3728456172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64855 (or 64850 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 3728456172 is about 61061.0855782961. The cubic root of 3728456172 is about 1550.6353513246.

The spelling of 3728456172 in words is "three billion, seven hundred twenty-eight million, four hundred fifty-six thousand, one hundred seventy-two".