32128973 has 2 divisors, whose sum is σ = 32128974. Its totient is φ = 32128972.

The previous prime is 32128969. The next prime is 32129011. The reversal of 32128973 is 37982123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29626249 + 2502724 = 5443^2 + 1582^2 .

It is a cyclic number.

It is not a de Polignac number, because 32128973 - 2² = 32128969 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32128673) 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 as a sum of consecutive naturals, namely, 16064486 + 16064487.

It is an arithmetic number, because the mean of its divisors is an integer number (16064487).

Almost surely, 2^32128973 is an apocalyptic number.

It is an amenable number.

32128973 is a deficient number, since it is larger than the sum of its proper divisors (1).

32128973 is an equidigital number, since it uses as much as digits as its factorization.

32128973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 35.

The square root of 32128973 is about 5668.2424965769. The cubic root of 32128973 is about 317.9061633920.

The spelling of 32128973 in words is "thirty-two million, one hundred twenty-eight thousand, nine hundred seventy-three".