2532630640 has 20 divisors (see below), whose sum is σ = 5888366424. Its totient is φ = 1013052224.

The previous prime is 2532630589. The next prime is 2532630643. The reversal of 2532630640 is 460362352.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2532630643) 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, 15828862 + ... + 15829021.

Almost surely, 2^2532630640 is an apocalyptic number.

2532630640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2532630640 is an abundant number, since it is smaller than the sum of its proper divisors (3355735784).

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

2532630640 is a wasteful number, since it uses less digits than its factorization.

2532630640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31657896 (or 31657890 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 31.

The square root of 2532630640 is about 50325.2485339119. The cubic root of 2532630640 is about 1363.0881812546.

Adding to 2532630640 its reverse (460362352), we get a palindrome (2992992992).

The spelling of 2532630640 in words is "two billion, five hundred thirty-two million, six hundred thirty thousand, six hundred forty".