2640262332 has 12 divisors (see below), whose sum is σ = 6160612136. Its totient is φ = 880087440.

The previous prime is 2640262319. The next prime is 2640262337. The reversal of 2640262332 is 2332620462.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 2640262332.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640262337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110010919 + ... + 110010942.

Almost surely, 2^2640262332 is an apocalyptic number.

It is an amenable number.

2640262332 is an abundant number, since it is smaller than the sum of its proper divisors (3520349804).

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

2640262332 is a wasteful number, since it uses less digits than its factorization.

2640262332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220021868 (or 220021866 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

The square root of 2640262332 is about 51383.4830660593. The cubic root of 2640262332 is about 1382.1304228988.

Adding to 2640262332 its reverse (2332620462), we get a palindrome (4972882794).

The spelling of 2640262332 in words is "two billion, six hundred forty million, two hundred sixty-two thousand, three hundred thirty-two".