2532440 has 16 divisors (see below), whose sum is σ = 5698080. Its totient is φ = 1012960.

The previous prime is 2532437. The next prime is 2532449. The reversal of 2532440 is 442352.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2532449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31616 + ... + 31695.

It is an arithmetic number, because the mean of its divisors is an integer number (356130).

2^2532440 is an apocalyptic number.

2532440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2532440 is an abundant number, since it is smaller than the sum of its proper divisors (3165640).

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

2532440 is a wasteful number, since it uses less digits than its factorization.

2532440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63322 (or 63318 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 2532440 is about 1591.3641946456. The cubic root of 2532440 is about 136.3053978919.

Adding to 2532440 its reverse (442352), we get a palindrome (2974792).

The spelling of 2532440 in words is "two million, five hundred thirty-two thousand, four hundred forty".