2640003012 has 36 divisors (see below), whose sum is σ = 6710226796. Its totient is φ = 875136960.

The previous prime is 2640002993. The next prime is 2640003097. The reversal of 2640003012 is 2103000462.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 159365376 + 2480637636 = 12624^2 + 49806^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 196063 + ... + 209094.

Almost surely, 2^2640003012 is an apocalyptic number.

It is an amenable number.

2640003012 is an abundant number, since it is smaller than the sum of its proper divisors (4070223784).

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

2640003012 is a wasteful number, since it uses less digits than its factorization.

2640003012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405348 (or 405343 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2640003012 is about 51380.9596251374. The cubic root of 2640003012 is about 1382.0851716130.

Adding to 2640003012 its reverse (2103000462), we get a palindrome (4743003474).

The spelling of 2640003012 in words is "two billion, six hundred forty million, three thousand, twelve".