5637438 has 80 divisors (see below), whose sum is σ = 14113440. Its totient is φ = 1672704.

The previous prime is 5637427. The next prime is 5637439. The reversal of 5637438 is 8347365.

It is a happy number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5637439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 63298 + ... + 63386.

It is an arithmetic number, because the mean of its divisors is an integer number (176418).

Almost surely, 2^5637438 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5637438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7056720).

5637438 is an abundant number, since it is smaller than the sum of its proper divisors (8476002).

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

5637438 is a wasteful number, since it uses less digits than its factorization.

5637438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 134 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 5637438 is about 2374.3289578321. The cubic root of 5637438 is about 177.9756521004.

It can be divided in two parts, 563 and 7438, that added together give a triangular number (8001 = T₁₂₆).

The spelling of 5637438 in words is "five million, six hundred thirty-seven thousand, four hundred thirty-eight".