16420916 has 6 divisors (see below), whose sum is σ = 28736610. Its totient is φ = 8210456.

The previous prime is 16420913. The next prime is 16420927. The reversal of 16420916 is 61902461.

It can be written as a sum of positive squares in only one way, i.e., 8880400 + 7540516 = 2980^2 + 2746^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16420913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2052611 + ... + 2052618.

It is an arithmetic number, because the mean of its divisors is an integer number (4789435).

Almost surely, 2^16420916 is an apocalyptic number.

It is an amenable number.

16420916 is a deficient number, since it is larger than the sum of its proper divisors (12315694).

16420916 is a wasteful number, since it uses less digits than its factorization.

16420916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4105233 (or 4105231 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 16420916 is about 4052.2729424361. The cubic root of 16420916 is about 254.1747820515.

The spelling of 16420916 in words is "sixteen million, four hundred twenty thousand, nine hundred sixteen".