2541440 has 96 divisors (see below), whose sum is σ = 6995160. Its totient is φ = 875520.

The previous prime is 2541439. The next prime is 2541457. The reversal of 2541440 is 441452.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 133751 + ... + 133769.

2^2541440 is an apocalyptic number.

2541440 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 2541440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3497580).

2541440 is an abundant number, since it is smaller than the sum of its proper divisors (4453720).

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

2541440 is a wasteful number, since it uses less digits than its factorization.

2541440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68 (or 37 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 2541440 is about 1594.1894492186. The cubic root of 2541440 is about 136.4666782121.

Adding to 2541440 its reverse (441452), we get a palindrome (2982892).

The spelling of 2541440 in words is "two million, five hundred forty-one thousand, four hundred forty".