16421736 has 16 divisors (see below), whose sum is σ = 41054400. Its totient is φ = 5473904.

The previous prime is 16421731. The next prime is 16421773. The reversal of 16421736 is 63712461.

It is not an unprimeable number, because it can be changed into a prime (16421731) 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 3 ways as a sum of consecutive naturals, for example, 342096 + ... + 342143.

It is an arithmetic number, because the mean of its divisors is an integer number (2565900).

Almost surely, 2^16421736 is an apocalyptic number.

It is an amenable number.

16421736 is an abundant number, since it is smaller than the sum of its proper divisors (24632664).

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

16421736 is a wasteful number, since it uses less digits than its factorization.

16421736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684248 (or 684244 counting only the distinct ones).

The product of its digits is 6048, while the sum is 30.

The square root of 16421736 is about 4052.3741189579. The cubic root of 16421736 is about 254.1790128316.

The spelling of 16421736 in words is "sixteen million, four hundred twenty-one thousand, seven hundred thirty-six".