16782145 has 16 divisors (see below), whose sum is σ = 21461760. Its totient is φ = 12553984.

The previous prime is 16782133. The next prime is 16782151. The reversal of 16782145 is 54128761.

It is a cyclic number.

It is not a de Polignac number, because 16782145 - 2¹⁵ = 16749377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16782145.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14664 + ... + 15766.

It is an arithmetic number, because the mean of its divisors is an integer number (1341360).

Almost surely, 2^16782145 is an apocalyptic number.

It is an amenable number.

16782145 is a deficient number, since it is larger than the sum of its proper divisors (4679615).

16782145 is a wasteful number, since it uses less digits than its factorization.

16782145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1304.

The product of its digits is 13440, while the sum is 34.

The square root of 16782145 is about 4096.6016403844. The cubic root of 16782145 is about 256.0250677357.

The spelling of 16782145 in words is "sixteen million, seven hundred eighty-two thousand, one hundred forty-five".