128967532 has 12 divisors (see below), whose sum is σ = 235506096. Its totient is φ = 61680080.

The previous prime is 128967529. The next prime is 128967539. The reversal of 128967532 is 235769821.

It is not an unprimeable number, because it can be changed into a prime (128967539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 700819 + ... + 701002.

It is an arithmetic number, because the mean of its divisors is an integer number (19625508).

Almost surely, 2^128967532 is an apocalyptic number.

It is an amenable number.

128967532 is a deficient number, since it is larger than the sum of its proper divisors (106538564).

128967532 is a wasteful number, since it uses less digits than its factorization.

128967532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1401848 (or 1401846 counting only the distinct ones).

The product of its digits is 181440, while the sum is 43.

The square root of 128967532 is about 11356.3872776513. The cubic root of 128967532 is about 505.2350400844.

The spelling of 128967532 in words is "one hundred twenty-eight million, nine hundred sixty-seven thousand, five hundred thirty-two".