4522638 has 8 divisors (see below), whose sum is σ = 9045288. Its totient is φ = 1507544.

The previous prime is 4522633. The next prime is 4522657. The reversal of 4522638 is 8362254.

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

4522638 is an admirable number.

It is an Ulam number.

It is a d-powerful number, because it can be written as 4⁸ + 5² + 2¹⁸ + 2²² + 6² + 3⁴ + 8³ .

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4522633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 376881 + ... + 376892.

It is an arithmetic number, because the mean of its divisors is an integer number (1130661).

Almost surely, 2^4522638 is an apocalyptic number.

4522638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

4522638 is a wasteful number, since it uses less digits than its factorization.

4522638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753778.

The product of its digits is 11520, while the sum is 30.

The square root of 4522638 is about 2126.6494774645. The cubic root of 4522638 is about 165.3727477499.

The spelling of 4522638 in words is "four million, five hundred twenty-two thousand, six hundred thirty-eight".