128629263 has 24 divisors (see below), whose sum is σ = 202901760. Its totient is φ = 72251760.

The previous prime is 128629253. The next prime is 128629307. The reversal of 128629263 is 362926821.

It is a happy number.

It is not a de Polignac number, because 128629263 - 2⁴ = 128629247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128629243) 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, 1258 + ... + 16088.

It is an arithmetic number, because the mean of its divisors is an integer number (8454240).

Almost surely, 2^128629263 is an apocalyptic number.

128629263 is a deficient number, since it is larger than the sum of its proper divisors (74272497).

128629263 is a wasteful number, since it uses less digits than its factorization.

128629263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14907 (or 14900 counting only the distinct ones).

The product of its digits is 62208, while the sum is 39.

The square root of 128629263 is about 11341.4841621368. The cubic root of 128629263 is about 504.7929262443.

The spelling of 128629263 in words is "one hundred twenty-eight million, six hundred twenty-nine thousand, two hundred sixty-three".