3646238 has 4 divisors (see below), whose sum is σ = 5469360. Its totient is φ = 1823118.

The previous prime is 3646231. The next prime is 3646261. The reversal of 3646238 is 8326463.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3646231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 911558 + ... + 911561.

It is an arithmetic number, because the mean of its divisors is an integer number (1367340).

Almost surely, 2^3646238 is an apocalyptic number.

3646238 is a deficient number, since it is larger than the sum of its proper divisors (1823122).

3646238 is a wasteful number, since it uses less digits than its factorization.

3646238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1823121.

The product of its digits is 20736, while the sum is 32.

The square root of 3646238 is about 1909.5125032322. The cubic root of 3646238 is about 153.9152566873.

The spelling of 3646238 in words is "three million, six hundred forty-six thousand, two hundred thirty-eight".