3781392 has 20 divisors (see below), whose sum is σ = 9768720. Its totient is φ = 1260448.

The previous prime is 3781387. The next prime is 3781403. The reversal of 3781392 is 2931873.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39342 + ... + 39437.

It is an arithmetic number, because the mean of its divisors is an integer number (488436).

Almost surely, 2^3781392 is an apocalyptic number.

It is an amenable number.

3781392 is an abundant number, since it is smaller than the sum of its proper divisors (5987328).

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

3781392 is a wasteful number, since it uses less digits than its factorization.

3781392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78790 (or 78784 counting only the distinct ones).

The product of its digits is 9072, while the sum is 33.

The square root of 3781392 is about 1944.5801603431. The cubic root of 3781392 is about 155.7939422744.

It can be divided in two parts, 378 and 1392, that added together give a triangular number (1770 = T₅₉).

The spelling of 3781392 in words is "three million, seven hundred eighty-one thousand, three hundred ninety-two".