16505010 has 24 divisors (see below), whose sum is σ = 42913260. Its totient is φ = 4401312.

The previous prime is 16505009. The next prime is 16505017. The reversal of 16505010 is 1050561.

16505010 is a `hidden beast` number, since 1 + 650 + 5 + 0 + 10 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 15421329 + 1083681 = 3927^2 + 1041^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (16505017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91605 + ... + 91784.

Almost surely, 2^16505010 is an apocalyptic number.

16505010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16505010 is an abundant number, since it is smaller than the sum of its proper divisors (26408250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16505010 is a wasteful number, since it uses less digits than its factorization.

16505010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183402 (or 183399 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 16505010 is about 4062.6358438826. The cubic root of 16505010 is about 254.6079326768.

Adding to 16505010 its reverse (1050561), we get a palindrome (17555571).

The spelling of 16505010 in words is "sixteen million, five hundred five thousand, ten".