16421268 has 12 divisors (see below), whose sum is σ = 38316320. Its totient is φ = 5473752.

The previous prime is 16421267. The next prime is 16421297. The reversal of 16421268 is 86212461.

16421268 is digitally balanced in base 2, because in such base 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 (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16421267) 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, 684208 + ... + 684231.

Almost surely, 2^16421268 is an apocalyptic number.

It is an amenable number.

16421268 is an abundant number, since it is smaller than the sum of its proper divisors (21895052).

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

16421268 is a wasteful number, since it uses less digits than its factorization.

16421268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1368446 (or 1368444 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 16421268 is about 4052.3163746183. The cubic root of 16421268 is about 254.1765982085.

The spelling of 16421268 in words is "sixteen million, four hundred twenty-one thousand, two hundred sixty-eight".