16377216 has 32 divisors (see below), whose sum is σ = 43503000. Its totient is φ = 5458944.

The previous prime is 16377211. The next prime is 16377217. The reversal of 16377216 is 61277361.

16377216 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16377211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20941 + ... + 21708.

Almost surely, 2^16377216 is an apocalyptic number.

16377216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16377216 is an abundant number, since it is smaller than the sum of its proper divisors (27125784).

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

16377216 is an equidigital number, since it uses as much as digits as its factorization.

16377216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42666 (or 42654 counting only the distinct ones).

The product of its digits is 10584, while the sum is 33.

The square root of 16377216 is about 4046.8773146712. The cubic root of 16377216 is about 253.9491083689.

The spelling of 16377216 in words is "sixteen million, three hundred seventy-seven thousand, two hundred sixteen".