16779216 has 20 divisors (see below), whose sum is σ = 43346432. Its totient is φ = 5593056.

The previous prime is 16779211. The next prime is 16779229. The reversal of 16779216 is 61297761.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16779211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174736 + ... + 174831.

Almost surely, 2^16779216 is an apocalyptic number.

16779216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16779216 is an abundant number, since it is smaller than the sum of its proper divisors (26567216).

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

16779216 is a wasteful number, since it uses less digits than its factorization.

16779216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349578 (or 349572 counting only the distinct ones).

The product of its digits is 31752, while the sum is 39.

The square root of 16779216 is about 4096.2441333495. The cubic root of 16779216 is about 256.0101721218.

The spelling of 16779216 in words is "sixteen million, seven hundred seventy-nine thousand, two hundred sixteen".