2458638 has 96 divisors (see below), whose sum is σ = 6988800. Its totient is φ = 606528.

The previous prime is 2458633. The next prime is 2458639. The reversal of 2458638 is 8368542.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2458633) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31083 + ... + 31161.

It is an arithmetic number, because the mean of its divisors is an integer number (72800).

2^2458638 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2458638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3494400).

2458638 is an abundant number, since it is smaller than the sum of its proper divisors (4530162).

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

2458638 is a wasteful number, since it uses less digits than its factorization.

2458638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 123 counting only the distinct ones).

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

The square root of 2458638 is about 1568.0044642794. The cubic root of 2458638 is about 134.9682229734.

The spelling of 2458638 in words is "two million, four hundred fifty-eight thousand, six hundred thirty-eight".