3912880 has 40 divisors (see below), whose sum is σ = 9262800. Its totient is φ = 1536768.

The previous prime is 3912877. The next prime is 3912893. The reversal of 3912880 is 882193.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4306 + ... + 5134.

It is an arithmetic number, because the mean of its divisors is an integer number (231570).

Almost surely, 2^3912880 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 3912880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4631400).

3912880 is an abundant number, since it is smaller than the sum of its proper divisors (5349920).

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

3912880 is a wasteful number, since it uses less digits than its factorization.

3912880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901 (or 895 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 3912880 is about 1978.1000985794. The cubic root of 3912880 is about 157.5791824909.

The spelling of 3912880 in words is "three million, nine hundred twelve thousand, eight hundred eighty".