28670953 has 2 divisors, whose sum is σ = 28670954. Its totient is φ = 28670952.

The previous prime is 28670951. The next prime is 28670989. The reversal of 28670953 is 35907682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24880144 + 3790809 = 4988^2 + 1947^2 .

It is a cyclic number.

It is not a de Polignac number, because 28670953 - 2¹ = 28670951 is a prime.

Together with 28670951, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (28670951) 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, 14335476 + 14335477.

It is an arithmetic number, because the mean of its divisors is an integer number (14335477).

Almost surely, 2^28670953 is an apocalyptic number.

It is an amenable number.

28670953 is a deficient number, since it is larger than the sum of its proper divisors (1).

28670953 is an equidigital number, since it uses as much as digits as its factorization.

28670953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 28670953 is about 5354.5264029604. The cubic root of 28670953 is about 306.0652636794.

The spelling of 28670953 in words is "twenty-eight million, six hundred seventy thousand, nine hundred fifty-three".