2640020532 has 48 divisors (see below), whose sum is σ = 6199345152. Its totient is φ = 874413280.

The previous prime is 2640020479. The next prime is 2640020533. The reversal of 2640020532 is 2350200462.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640020533) 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, 1428433 + ... + 1430279.

It is an arithmetic number, because the mean of its divisors is an integer number (129153024).

Almost surely, 2^2640020532 is an apocalyptic number.

It is an amenable number.

2640020532 is an abundant number, since it is smaller than the sum of its proper divisors (3559324620).

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

2640020532 is a wasteful number, since it uses less digits than its factorization.

2640020532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2548 (or 2546 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 2640020532 is about 51381.1301160261. The cubic root of 2640020532 is about 1382.0882289427.

Adding to 2640020532 its reverse (2350200462), we get a palindrome (4990220994).

The spelling of 2640020532 in words is "two billion, six hundred forty million, twenty thousand, five hundred thirty-two".