16923287 has 2 divisors, whose sum is σ = 16923288. Its totient is φ = 16923286.

The previous prime is 16923253. The next prime is 16923293. The reversal of 16923287 is 78232961.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16923287 - 2⁶ = 16923223 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16923287.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16923587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8461643 + 8461644.

It is an arithmetic number, because the mean of its divisors is an integer number (8461644).

Almost surely, 2^16923287 is an apocalyptic number.

16923287 is a deficient number, since it is larger than the sum of its proper divisors (1).

16923287 is an equidigital number, since it uses as much as digits as its factorization.

16923287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 38.

The square root of 16923287 is about 4113.7922893603. The cubic root of 16923287 is about 256.7408097117.

The spelling of 16923287 in words is "sixteen million, nine hundred twenty-three thousand, two hundred eighty-seven".