16942745 has 8 divisors (see below), whose sum is σ = 20353416. Its totient is φ = 13539456.

The previous prime is 16942741. The next prime is 16942753. The reversal of 16942745 is 54724961.

It can be written as a sum of positive squares in 4 ways, for example, as 190096 + 16752649 = 436^2 + 4093^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16942745 - 2² = 16942741 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16942699 and 16942708.

It is not an unprimeable number, because it can be changed into a prime (16942741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7799 + ... + 9731.

It is an arithmetic number, because the mean of its divisors is an integer number (2544177).

Almost surely, 2^16942745 is an apocalyptic number.

It is an amenable number.

16942745 is a deficient number, since it is larger than the sum of its proper divisors (3410671).

16942745 is a wasteful number, since it uses less digits than its factorization.

16942745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3691.

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

The square root of 16942745 is about 4116.1565810839. The cubic root of 16942745 is about 256.8391702186.

The spelling of 16942745 in words is "sixteen million, nine hundred forty-two thousand, seven hundred forty-five".