2498640 has 80 divisors (see below), whose sum is σ = 8035200. Its totient is φ = 641536.

The previous prime is 2498603. The next prime is 2498641. The reversal of 2498640 is 468942.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2498641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6781 + ... + 7139.

It is an arithmetic number, because the mean of its divisors is an integer number (100440).

2^2498640 is an apocalyptic number.

2498640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2498640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4017600).

2498640 is an abundant number, since it is smaller than the sum of its proper divisors (5536560).

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

2498640 is a wasteful number, since it uses less digits than its factorization.

2498640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404 (or 398 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 2498640 is about 1580.7087018170. The cubic root of 2498640 is about 135.6962656459.

The spelling of 2498640 in words is "two million, four hundred ninety-eight thousand, six hundred forty".