4258638 has 24 divisors (see below), whose sum is σ = 9320688. Its totient is φ = 1405152.

The previous prime is 4258609. The next prime is 4258643. The reversal of 4258638 is 8368524.

4258638 is a `hidden beast` number, since 42 + 586 + 38 = 666.

It is a d-powerful number, because it can be written as 4² + 2²² + 5⁴ + 8³ + 6² + 3¹⁰ + 8⁴ .

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 706 + ... + 3002.

It is an arithmetic number, because the mean of its divisors is an integer number (388362).

Almost surely, 2^4258638 is an apocalyptic number.

4258638 is an abundant number, since it is smaller than the sum of its proper divisors (5062050).

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

4258638 is a wasteful number, since it uses less digits than its factorization.

4258638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2408 (or 2405 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 4258638 is about 2063.6467721003. The cubic root of 4258638 is about 162.0902560615.

It can be divided in two parts, 42586 and 38, that added together give a palindrome (42624).

The spelling of 4258638 in words is "four million, two hundred fifty-eight thousand, six hundred thirty-eight".