128752263 has 6 divisors (see below), whose sum is σ = 185975504. Its totient is φ = 85834836.

The previous prime is 128752249. The next prime is 128752279. The reversal of 128752263 is 362257821.

128752263 is a `hidden beast` number, since 128 + 7 + 522 + 6 + 3 = 666.

It is not a de Polignac number, because 128752263 - 2⁵ = 128752231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128752243) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7152895 + ... + 7152912.

Almost surely, 2^128752263 is an apocalyptic number.

128752263 is a deficient number, since it is larger than the sum of its proper divisors (57223241).

128752263 is a wasteful number, since it uses less digits than its factorization.

128752263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14305813 (or 14305810 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 128752263 is about 11346.9054371666. The cubic root of 128752263 is about 504.9537754638.

The spelling of 128752263 in words is "one hundred twenty-eight million, seven hundred fifty-two thousand, two hundred sixty-three".