16887245 has 4 divisors (see below), whose sum is σ = 20264700. Its totient is φ = 13509792.

The previous prime is 16887223. The next prime is 16887253. The reversal of 16887245 is 54278861.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5851561 + 11035684 = 2419^2 + 3322^2 .

It is a cyclic number.

It is not a de Polignac number, because 16887245 - 2¹⁶ = 16821709 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1688720 + ... + 1688729.

It is an arithmetic number, because the mean of its divisors is an integer number (5066175).

Almost surely, 2^16887245 is an apocalyptic number.

It is an amenable number.

16887245 is a deficient number, since it is larger than the sum of its proper divisors (3377455).

16887245 is an equidigital number, since it uses as much as digits as its factorization.

16887245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3377454.

The product of its digits is 107520, while the sum is 41.

The square root of 16887245 is about 4109.4093249517. The cubic root of 16887245 is about 256.5584174621.

The spelling of 16887245 in words is "sixteen million, eight hundred eighty-seven thousand, two hundred forty-five".