2520778528 has 12 divisors (see below), whose sum is σ = 4962782790. Its totient is φ = 1260389248.

The previous prime is 2520778517. The next prime is 2520778529. The reversal of 2520778528 is 8258770252.

It can be written as a sum of positive squares in only one way, i.e., 2443127184 + 77651344 = 49428^2 + 8812^2 .

It is not an unprimeable number, because it can be changed into a prime (2520778529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39387133 + ... + 39387196.

Almost surely, 2^2520778528 is an apocalyptic number.

It is an amenable number.

2520778528 is a deficient number, since it is larger than the sum of its proper divisors (2442004262).

2520778528 is an equidigital number, since it uses as much as digits as its factorization.

2520778528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78774339 (or 78774331 counting only the distinct ones).

The product of its (nonzero) digits is 627200, while the sum is 46.

The square root of 2520778528 is about 50207.3553177221. The cubic root of 2520778528 is about 1360.9585456991.

The spelling of 2520778528 in words is "two billion, five hundred twenty million, seven hundred seventy-eight thousand, five hundred twenty-eight".