39671712 has 72 divisors (see below), whose sum is σ = 113742720. Its totient is φ = 13115520.

The previous prime is 39671683. The next prime is 39671717. The reversal of 39671712 is 21717693.

It is a happy number.

39671712 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (39671717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39537 + ... + 40527.

It is an arithmetic number, because the mean of its divisors is an integer number (1579760).

Almost surely, 2^39671712 is an apocalyptic number.

39671712 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39671712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56871360).

39671712 is an abundant number, since it is smaller than the sum of its proper divisors (74071008).

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

39671712 is a wasteful number, since it uses less digits than its factorization.

39671712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146 (or 1135 counting only the distinct ones).

The product of its digits is 15876, while the sum is 36.

The square root of 39671712 is about 6298.5484041960. The cubic root of 39671712 is about 341.0570103883.

The spelling of 39671712 in words is "thirty-nine million, six hundred seventy-one thousand, seven hundred twelve".