16906816 has 14 divisors (see below), whose sum is σ = 33549590. Its totient is φ = 8453376.

The previous prime is 16906781. The next prime is 16906829. The reversal of 16906816 is 61860961.

It can be written as a sum of positive squares in only one way, i.e., 16777216 + 129600 = 4096^2 + 360^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132021 + ... + 132148.

Almost surely, 2^16906816 is an apocalyptic number.

16906816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16906816 is a deficient number, since it is larger than the sum of its proper divisors (16642774).

16906816 is an equidigital number, since it uses as much as digits as its factorization.

16906816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264181 (or 264171 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 16906816 is about 4111.7898778999. The cubic root of 16906816 is about 256.6574895990.

The spelling of 16906816 in words is "sixteen million, nine hundred six thousand, eight hundred sixteen".