16861010 has 32 divisors (see below), whose sum is σ = 31230144. Its totient is φ = 6552000.

The previous prime is 16861003. The next prime is 16861021. The reversal of 16861010 is 1016861.

It is a happy number.

It is a Smith number, since the sum of its digits (23) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 79805 + ... + 80015.

It is an arithmetic number, because the mean of its divisors is an integer number (975942).

Almost surely, 2^16861010 is an apocalyptic number.

16861010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16861010 is a deficient number, since it is larger than the sum of its proper divisors (14369134).

16861010 is a wasteful number, since it uses less digits than its factorization.

16861010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 16861010 is about 4106.2160196463. The cubic root of 16861010 is about 256.4254907350.

Adding to 16861010 its reverse (1016861), we get a palindrome (17877871).

The spelling of 16861010 in words is "sixteen million, eight hundred sixty-one thousand, ten".