3915688 has 32 divisors (see below), whose sum is σ = 8568000. Its totient is φ = 1676976.

The previous prime is 3915683. The next prime is 3915689. The reversal of 3915688 is 8865193.

It is a happy number.

It is a super-2 number, since 2×3915688² = 30665225026688, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3915688.

It is not an unprimeable number, because it can be changed into a prime (3915683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2031 + ... + 3457.

It is an arithmetic number, because the mean of its divisors is an integer number (267750).

Almost surely, 2^3915688 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 3915688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4284000).

3915688 is an abundant number, since it is smaller than the sum of its proper divisors (4652312).

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

3915688 is a wasteful number, since it uses less digits than its factorization.

3915688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1454 (or 1436 counting only the distinct ones).

The product of its digits is 51840, while the sum is 40.

The square root of 3915688 is about 1978.8097432548. The cubic root of 3915688 is about 157.6168679928.

The spelling of 3915688 in words is "three million, nine hundred fifteen thousand, six hundred eighty-eight".