2640484772 has 24 divisors (see below), whose sum is σ = 4661456184. Its totient is φ = 1308690432.

The previous prime is 2640484753. The next prime is 2640484793. The reversal of 2640484772 is 2774840462.

It can be written as a sum of positive squares in 4 ways, for example, as 133079296 + 2507405476 = 11536^2 + 50074^2 .

It is a super-4 number, since 4×2640484772⁴ (a number of 39 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212228 + ... + 224324.

It is an arithmetic number, because the mean of its divisors is an integer number (194227341).

Almost surely, 2^2640484772 is an apocalyptic number.

It is an amenable number.

2640484772 is a deficient number, since it is larger than the sum of its proper divisors (2020971412).

2640484772 is a wasteful number, since it uses less digits than its factorization.

2640484772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12575 (or 12573 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 44.

The square root of 2640484772 is about 51385.6475292469. The cubic root of 2640484772 is about 1382.1692362715.

The spelling of 2640484772 in words is "two billion, six hundred forty million, four hundred eighty-four thousand, seven hundred seventy-two".