32128855 has 16 divisors (see below), whose sum is σ = 42241824. Its totient is φ = 23265280.

The previous prime is 32128853. The next prime is 32128891. The reversal of 32128855 is 55882123.

It is not a de Polignac number, because 32128855 - 2¹ = 32128853 is a prime.

It is a super-2 number, since 2×32128855² = 2064526647222050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 32128855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32128853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12999 + ... + 15271.

It is an arithmetic number, because the mean of its divisors is an integer number (2640114).

Almost surely, 2^32128855 is an apocalyptic number.

32128855 is a deficient number, since it is larger than the sum of its proper divisors (10112969).

32128855 is a wasteful number, since it uses less digits than its factorization.

32128855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2546.

The product of its digits is 19200, while the sum is 34.

The square root of 32128855 is about 5668.2320876972. The cubic root of 32128855 is about 317.9057742005.

The spelling of 32128855 in words is "thirty-two million, one hundred twenty-eight thousand, eight hundred fifty-five".