3648438 has 24 divisors (see below), whose sum is σ = 8370648. Its totient is φ = 1144512.

The previous prime is 3648427. The next prime is 3648439. The reversal of 3648438 is 8348463.

3648438 is a `hidden beast` number, since 3 + 648 + 4 + 3 + 8 = 666.

It is a super-2 number, since 2×3648438² = 26622199679688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3648439) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5656 + ... + 6267.

It is an arithmetic number, because the mean of its divisors is an integer number (348777).

Almost surely, 2^3648438 is an apocalyptic number.

3648438 is an abundant number, since it is smaller than the sum of its proper divisors (4722210).

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

3648438 is a wasteful number, since it uses less digits than its factorization.

3648438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11948 (or 11945 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 3648438 is about 1910.0884796260. The cubic root of 3648438 is about 153.9462059822.

The spelling of 3648438 in words is "three million, six hundred forty-eight thousand, four hundred thirty-eight".