39147668 has 72 divisors (see below), whose sum is σ = 87333120. Its totient is φ = 15240960.

The previous prime is 39147649. The next prime is 39147671. The reversal of 39147668 is 86674193.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 103103 + ... + 103481.

It is an arithmetic number, because the mean of its divisors is an integer number (1212960).

Almost surely, 2^39147668 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 39147668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43666560).

39147668 is an abundant number, since it is smaller than the sum of its proper divisors (48185452).

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

39147668 is a wasteful number, since it uses less digits than its factorization.

39147668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445 (or 436 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The square root of 39147668 is about 6256.8097302060. The cubic root of 39147668 is about 339.5486166959.

The spelling of 39147668 in words is "thirty-nine million, one hundred forty-seven thousand, six hundred sixty-eight".