16923071 has 4 divisors (see below), whose sum is σ = 18461544. Its totient is φ = 15384600.

The previous prime is 16923031. The next prime is 16923107. The reversal of 16923071 is 17032961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17032961 = 11 ⋅1548451.

It is a de Polignac number, because none of the positive numbers 2^k-16923071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16923001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 769220 + ... + 769241.

It is an arithmetic number, because the mean of its divisors is an integer number (4615386).

Almost surely, 2^16923071 is an apocalyptic number.

16923071 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16923071 is a deficient number, since it is larger than the sum of its proper divisors (1538473).

16923071 is a wasteful number, since it uses less digits than its factorization.

16923071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1538472.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 16923071 is about 4113.7660361280. The cubic root of 16923071 is about 256.7397174051.

The spelling of 16923071 in words is "sixteen million, nine hundred twenty-three thousand, seventy-one".