2528738648 has 8 divisors (see below), whose sum is σ = 4741384980. Its totient is φ = 1264369320.

The previous prime is 2528738629. The next prime is 2528738651. The reversal of 2528738648 is 8468378252.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 2528738648.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158046158 + ... + 158046173.

Almost surely, 2^2528738648 is an apocalyptic number.

It is an amenable number.

2528738648 is a deficient number, since it is larger than the sum of its proper divisors (2212646332).

2528738648 is a wasteful number, since it uses less digits than its factorization.

2528738648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316092337 (or 316092333 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 53.

The square root of 2528738648 is about 50286.5652833836. The cubic root of 2528738648 is about 1362.3895864065.

The spelling of 2528738648 in words is "two billion, five hundred twenty-eight million, seven hundred thirty-eight thousand, six hundred forty-eight".