16419428 has 6 divisors (see below), whose sum is σ = 28734006. Its totient is φ = 8209712.

The previous prime is 16419419. The next prime is 16419451. The reversal of 16419428 is 82491461.

It is a happy number.

16419428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 16386304 + 33124 = 4048^2 + 182^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2052425 + ... + 2052432.

It is an arithmetic number, because the mean of its divisors is an integer number (4789001).

Almost surely, 2^16419428 is an apocalyptic number.

It is an amenable number.

16419428 is a deficient number, since it is larger than the sum of its proper divisors (12314578).

16419428 is a wasteful number, since it uses less digits than its factorization.

16419428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4104861 (or 4104859 counting only the distinct ones).

The product of its digits is 13824, while the sum is 35.

The square root of 16419428 is about 4052.0893376134. The cubic root of 16419428 is about 254.1671043738.

The spelling of 16419428 in words is "sixteen million, four hundred nineteen thousand, four hundred twenty-eight".