2520032440 has 16 divisors (see below), whose sum is σ = 5670073080. Its totient is φ = 1008012960.

The previous prime is 2520032429. The next prime is 2520032441. The reversal of 2520032440 is 442300252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520032441) 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, 31500366 + ... + 31500445.

Almost surely, 2^2520032440 is an apocalyptic number.

2520032440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2520032440 is an abundant number, since it is smaller than the sum of its proper divisors (3150040640).

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

2520032440 is a wasteful number, since it uses less digits than its factorization.

2520032440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63000822 (or 63000818 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 2520032440 is about 50199.9247011387. The cubic root of 2520032440 is about 1360.8242624447.

Adding to 2520032440 its reverse (442300252), we get a palindrome (2962332692).

The spelling of 2520032440 in words is "two billion, five hundred twenty million, thirty-two thousand, four hundred forty".