16720011 has 48 divisors (see below), whose sum is σ = 31449600. Its totient is φ = 8300160.

The previous prime is 16720007. The next prime is 16720021. The reversal of 16720011 is 11002761.

It is not a de Polignac number, because 16720011 - 2² = 16720007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16720021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15415 + ... + 16463.

It is an arithmetic number, because the mean of its divisors is an integer number (655200).

Almost surely, 2^16720011 is an apocalyptic number.

16720011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16720011 is a deficient number, since it is larger than the sum of its proper divisors (14729589).

16720011 is a wasteful number, since it uses less digits than its factorization.

16720011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096 (or 1093 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

The square root of 16720011 is about 4089.0110051209. The cubic root of 16720011 is about 255.7087090026.

Adding to 16720011 its reverse (11002761), we get a palindrome (27722772).

It can be divided in two parts, 16 and 720011, that added together give a palindrome (720027).

The spelling of 16720011 in words is "sixteen million, seven hundred twenty thousand, eleven".