2520771728 has 10 divisors (see below), whose sum is σ = 4883995254. Its totient is φ = 1260385856.

The previous prime is 2520771709. The next prime is 2520771739. The reversal of 2520771728 is 8271770252.

It can be written as a sum of positive squares in only one way, i.e., 1856575744 + 664195984 = 43088^2 + 25772^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78774101 + ... + 78774132.

Almost surely, 2^2520771728 is an apocalyptic number.

It is an amenable number.

2520771728 is a deficient number, since it is larger than the sum of its proper divisors (2363223526).

2520771728 is a wasteful number, since it uses less digits than its factorization.

2520771728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157548241 (or 157548235 counting only the distinct ones).

The product of its (nonzero) digits is 109760, while the sum is 41.

The square root of 2520771728 is about 50207.2875985150. The cubic root of 2520771728 is about 1360.9573219334.

The spelling of 2520771728 in words is "two billion, five hundred twenty million, seven hundred seventy-one thousand, seven hundred twenty-eight".