3721386 has 16 divisors (see below), whose sum is σ = 7644384. Its totient is φ = 1206864.

The previous prime is 3721379. The next prime is 3721391. The reversal of 3721386 is 6831273.

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, 8160 + ... + 8603.

It is an arithmetic number, because the mean of its divisors is an integer number (477774).

Almost surely, 2^3721386 is an apocalyptic number.

3721386 is an abundant number, since it is smaller than the sum of its proper divisors (3922998).

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

3721386 is a wasteful number, since it uses less digits than its factorization.

3721386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16805.

The product of its digits is 6048, while the sum is 30.

The square root of 3721386 is about 1929.0894224996. The cubic root of 3721386 is about 154.9654588311.

The spelling of 3721386 in words is "three million, seven hundred twenty-one thousand, three hundred eighty-six".