128455263 has 12 divisors (see below), whose sum is σ = 185700528. Its totient is φ = 85565760.

The previous prime is 128455241. The next prime is 128455267. The reversal of 128455263 is 362554821.

128455263 is a `hidden beast` number, since 128 + 4 + 5 + 526 + 3 = 666.

It is not a de Polignac number, because 128455263 - 2¹⁶ = 128389727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128455267) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7006 + ... + 17492.

It is an arithmetic number, because the mean of its divisors is an integer number (15475044).

Almost surely, 2^128455263 is an apocalyptic number.

128455263 is a deficient number, since it is larger than the sum of its proper divisors (57245265).

128455263 is a wasteful number, since it uses less digits than its factorization.

128455263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11854 (or 11851 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 128455263 is about 11333.8106124992. The cubic root of 128455263 is about 504.5652082223.

The spelling of 128455263 in words is "one hundred twenty-eight million, four hundred fifty-five thousand, two hundred sixty-three".