3781992 has 32 divisors (see below), whose sum is σ = 9712800. Its totient is φ = 1226304.

The previous prime is 3781961. The next prime is 3781993. The reversal of 3781992 is 2991873.

3781992 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 3781992.

It is not an unprimeable number, because it can be changed into a prime (3781993) 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, 1242 + ... + 3017.

It is an arithmetic number, because the mean of its divisors is an integer number (303525).

Almost surely, 2^3781992 is an apocalyptic number.

It is an amenable number.

3781992 is an abundant number, since it is smaller than the sum of its proper divisors (5930808).

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

3781992 is a wasteful number, since it uses less digits than its factorization.

3781992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4305 (or 4301 counting only the distinct ones).

The product of its digits is 27216, while the sum is 39.

The square root of 3781992 is about 1944.7344291702. The cubic root of 3781992 is about 155.8021818699.

The spelling of 3781992 in words is "three million, seven hundred eighty-one thousand, nine hundred ninety-two".