2497638 has 64 divisors (see below), whose sum is σ = 6096384. Its totient is φ = 672000.

The previous prime is 2497637. The next prime is 2497661. The reversal of 2497638 is 8367942.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 2497596 and 2497605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2497631) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35143 + ... + 35213.

It is an arithmetic number, because the mean of its divisors is an integer number (95256).

2^2497638 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2497638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3048192).

2497638 is an abundant number, since it is smaller than the sum of its proper divisors (3598746).

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

2497638 is a wasteful number, since it uses less digits than its factorization.

2497638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141.

The product of its digits is 72576, while the sum is 39.

The square root of 2497638 is about 1580.3917235926. The cubic root of 2497638 is about 135.6781243321.

It can be divided in two parts, 249 and 7638, that added together give a palindrome (7887).

The spelling of 2497638 in words is "two million, four hundred ninety-seven thousand, six hundred thirty-eight".