128532349 has 8 divisors (see below), whose sum is σ = 146313792. Its totient is φ = 111767040.

The previous prime is 128532311. The next prime is 128532407. The reversal of 128532349 is 943235821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 128532349 - 2¹⁷ = 128401277 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 (128532949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253764 + ... + 254269.

It is an arithmetic number, because the mean of its divisors is an integer number (18289224).

Almost surely, 2^128532349 is an apocalyptic number.

It is an amenable number.

128532349 is a deficient number, since it is larger than the sum of its proper divisors (17781443).

128532349 is a wasteful number, since it uses less digits than its factorization.

128532349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508067.

The product of its digits is 51840, while the sum is 37.

The square root of 128532349 is about 11337.2108121883. The cubic root of 128532349 is about 504.6661178959. Note that the first 3 decimals are identical.

It can be divided in two parts, 128532 and 349, that added together give a square (128881 = 359²).

The spelling of 128532349 in words is "one hundred twenty-eight million, five hundred thirty-two thousand, three hundred forty-nine".