3681388 has 12 divisors (see below), whose sum is σ = 6463912. Its totient is φ = 1834560.

The previous prime is 3681373. The next prime is 3681407. The reversal of 3681388 is 8831863.

Its product of digits (27648) is a multiple of the sum of its prime factors (3072).

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, 18 + ... + 2713.

Almost surely, 2^3681388 is an apocalyptic number.

It is an amenable number.

3681388 is a deficient number, since it is larger than the sum of its proper divisors (2782524).

3681388 is a wasteful number, since it uses less digits than its factorization.

3681388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3072 (or 3070 counting only the distinct ones).

The product of its digits is 27648, while the sum is 37.

The square root of 3681388 is about 1918.6943477271. The cubic root of 3681388 is about 154.4082606299.

The spelling of 3681388 in words is "three million, six hundred eighty-one thousand, three hundred eighty-eight".