32128906 has 16 divisors (see below), whose sum is σ = 49073544. Its totient is φ = 15773184.

The previous prime is 32128891. The next prime is 32128919. The reversal of 32128906 is 60982123.

It can be written as a sum of positive squares in 4 ways, for example, as 21298225 + 10830681 = 4615^2 + 3291^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48876 + ... + 49528.

Almost surely, 2^32128906 is an apocalyptic number.

32128906 is a deficient number, since it is larger than the sum of its proper divisors (16944638).

32128906 is a wasteful number, since it uses less digits than its factorization.

32128906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 32128906 is about 5668.2365864526. The cubic root of 32128906 is about 317.9059424105.

The spelling of 32128906 in words is "thirty-two million, one hundred twenty-eight thousand, nine hundred six".