5281638 has 16 divisors (see below), whose sum is σ = 10620336. Its totient is φ = 1751040.

The previous prime is 5281631. The next prime is 5281643. The reversal of 5281638 is 8361825.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 5281599 and 5281608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5281631) 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 7 ways as a sum of consecutive naturals, for example, 1123 + ... + 3438.

It is an arithmetic number, because the mean of its divisors is an integer number (663771).

Almost surely, 2^5281638 is an apocalyptic number.

5281638 is an abundant number, since it is smaller than the sum of its proper divisors (5338698).

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

5281638 is a wasteful number, since it uses less digits than its factorization.

5281638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4759.

The product of its digits is 11520, while the sum is 33.

The square root of 5281638 is about 2298.1814549770. The cubic root of 5281638 is about 174.1497587681.

The spelling of 5281638 in words is "five million, two hundred eighty-one thousand, six hundred thirty-eight".