32928257 has 2 divisors, whose sum is σ = 32928258. Its totient is φ = 32928256.

The previous prime is 32928229. The next prime is 32928281. The reversal of 32928257 is 75282923.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26173456 + 6754801 = 5116^2 + 2599^2 .

It is an emirp because it is prime and its reverse (75282923) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32928257 - 2⁸ = 32928001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 32928257.

It is not a weakly prime, because it can be changed into another prime (32928457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16464128 + 16464129.

It is an arithmetic number, because the mean of its divisors is an integer number (16464129).

Almost surely, 2^32928257 is an apocalyptic number.

It is an amenable number.

32928257 is a deficient number, since it is larger than the sum of its proper divisors (1).

32928257 is an equidigital number, since it uses as much as digits as its factorization.

32928257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 38.

The square root of 32928257 is about 5738.3148223150. The cubic root of 32928257 is about 320.5208217891.

The spelling of 32928257 in words is "thirty-two million, nine hundred twenty-eight thousand, two hundred fifty-seven".