2452440 has 64 divisors (see below), whose sum is σ = 7464960. Its totient is φ = 644480.

The previous prime is 2452433. The next prime is 2452459. The reversal of 2452440 is 442542.

2452440 = T₁₈₇ + T₁₈₈ + ... + T₂₇₆.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12745 + ... + 12935.

It is an arithmetic number, because the mean of its divisors is an integer number (116640).

2^2452440 is an apocalyptic number.

2452440 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 2452440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3732480).

2452440 is an abundant number, since it is smaller than the sum of its proper divisors (5012520).

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

2452440 is a wasteful number, since it uses less digits than its factorization.

2452440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312 (or 308 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 2452440 is about 1566.0268196937. The cubic root of 2452440 is about 134.8547133835.

Adding to 2452440 its reverse (442542), we get a palindrome (2894982).

The spelling of 2452440 in words is "two million, four hundred fifty-two thousand, four hundred forty".