2528620889 has 4 divisors (see below), whose sum is σ = 2533589220. Its totient is φ = 2523652560.

The previous prime is 2528620877. The next prime is 2528620907. The reversal of 2528620889 is 9880268252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2108370889 + 420250000 = 45917^2 + 20500^2 .

It is a cyclic number.

It is not a de Polignac number, because 2528620889 - 2²⁴ = 2511843673 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2528620859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2483402 + ... + 2484419.

It is an arithmetic number, because the mean of its divisors is an integer number (633397305).

Almost surely, 2^2528620889 is an apocalyptic number.

It is an amenable number.

2528620889 is a deficient number, since it is larger than the sum of its proper divisors (4968331).

2528620889 is an equidigital number, since it uses as much as digits as its factorization.

2528620889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4968330.

The product of its (nonzero) digits is 1105920, while the sum is 50.

The square root of 2528620889 is about 50285.3943904192. The cubic root of 2528620889 is about 1362.3684380334.

The spelling of 2528620889 in words is "two billion, five hundred twenty-eight million, six hundred twenty thousand, eight hundred eighty-nine".