3657238 has 8 divisors (see below), whose sum is σ = 5907888. Its totient is φ = 1687944.

The previous prime is 3657223. The next prime is 3657239. The reversal of 3657238 is 8327563.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a d-powerful number, because it can be written as 3⁷ + 6⁸ + 5⁶ + 7⁶ + 2²⁰ + 3¹² + 8⁶ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3657239) 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 in 3 ways as a sum of consecutive naturals, for example, 70306 + ... + 70357.

It is an arithmetic number, because the mean of its divisors is an integer number (738486).

Almost surely, 2^3657238 is an apocalyptic number.

3657238 is a deficient number, since it is larger than the sum of its proper divisors (2250650).

3657238 is a wasteful number, since it uses less digits than its factorization.

3657238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140678.

The product of its digits is 30240, while the sum is 34.

The square root of 3657238 is about 1912.3906504687. The cubic root of 3657238 is about 154.0698788959.

The spelling of 3657238 in words is "three million, six hundred fifty-seven thousand, two hundred thirty-eight".