2640248 has 32 divisors (see below), whose sum is σ = 5443200. Its totient is φ = 1193088.

The previous prime is 2640227. The next prime is 2640251. The reversal of 2640248 is 8420462.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5273 + ... + 5751.

It is an arithmetic number, because the mean of its divisors is an integer number (170100).

2^2640248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2640248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2721600).

2640248 is an abundant number, since it is smaller than the sum of its proper divisors (2802952).

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

2640248 is a wasteful number, since it uses less digits than its factorization.

2640248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551 (or 547 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 2640248 is about 1624.8839958594. The cubic root of 2640248 is about 138.2127922045.

The spelling of 2640248 in words is "two million, six hundred forty thousand, two hundred forty-eight".