3688236 has 18 divisors (see below), whose sum is σ = 9323132. Its totient is φ = 1229400.

The previous prime is 3688219. The next prime is 3688241. The reversal of 3688236 is 6328863.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 102451 = 3688236 / (3 + 6 + 8 + 8 + 2 + 3 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 3688236.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51190 + ... + 51261.

Almost surely, 2^3688236 is an apocalyptic number.

3688236 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3688236 is an abundant number, since it is smaller than the sum of its proper divisors (5634896).

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

3688236 is a wasteful number, since it uses less digits than its factorization.

3688236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102461 (or 102456 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 3688236 is about 1920.4780654827. The cubic root of 3688236 is about 154.5039430923.

The spelling of 3688236 in words is "three million, six hundred eighty-eight thousand, two hundred thirty-six".