3781036 has 36 divisors (see below), whose sum is σ = 7814016. Its totient is φ = 1596000.

The previous prime is 3781007. The next prime is 3781079. The reversal of 3781036 is 6301873.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3780995 and 3781013.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19701 + ... + 19891.

It is an arithmetic number, because the mean of its divisors is an integer number (217056).

Almost surely, 2^3781036 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 3781036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3907008).

3781036 is an abundant number, since it is smaller than the sum of its proper divisors (4032980).

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

3781036 is a wasteful number, since it uses less digits than its factorization.

3781036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310 (or 301 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 3781036 is about 1944.4886217204. The cubic root of 3781036 is about 155.7890530357.

The spelling of 3781036 in words is "three million, seven hundred eighty-one thousand, thirty-six".