2440520 has 64 divisors (see below), whose sum is σ = 6032880. Its totient is φ = 884736.

The previous prime is 2440517. The next prime is 2440523. The reversal of 2440520 is 250442.

It is an interprime number because it is at equal distance from previous prime (2440517) and next prime (2440523).

It can be written as a sum of positive squares in 8 ways, for example, as 1865956 + 574564 = 1366^2 + 758^2 .

It is a super-2 number, since 2×2440520² = 11912275740800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (2440523) 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, 25112 + ... + 25208.

2^2440520 is an apocalyptic number.

2440520 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 2440520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3016440).

2440520 is an abundant number, since it is smaller than the sum of its proper divisors (3592360).

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

2440520 is a wasteful number, since it uses less digits than its factorization.

2440520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 2440520 is about 1562.2163742581. The cubic root of 2440520 is about 134.6358728836.

Adding to 2440520 its reverse (250442), we get a palindrome (2690962).

The spelling of 2440520 in words is "two million, four hundred forty thousand, five hundred twenty".