2528738247 has 24 divisors (see below), whose sum is σ = 3930289536. Its totient is φ = 1441985328.

The previous prime is 2528738209. The next prime is 2528738273. The reversal of 2528738247 is 7428378252.

It is not a de Polignac number, because 2528738247 - 2⁶ = 2528738183 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2528738196 and 2528738205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2528738297) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53928 + ... + 89250.

It is an arithmetic number, because the mean of its divisors is an integer number (163762064).

Almost surely, 2^2528738247 is an apocalyptic number.

2528738247 is a deficient number, since it is larger than the sum of its proper divisors (1401551289).

2528738247 is a wasteful number, since it uses less digits than its factorization.

2528738247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35827 (or 35820 counting only the distinct ones).

The product of its digits is 1505280, while the sum is 48.

The square root of 2528738247 is about 50286.5612962350. The cubic root of 2528738247 is about 1362.3895143919.

The spelling of 2528738247 in words is "two billion, five hundred twenty-eight million, seven hundred thirty-eight thousand, two hundred forty-seven".