16919428 has 12 divisors (see below), whose sum is σ = 30564352. Its totient is φ = 8186760.

The previous prime is 16919423. The next prime is 16919447. The reversal of 16919428 is 82491961.

It is not an unprimeable number, because it can be changed into a prime (16919423) 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, 68100 + ... + 68347.

Almost surely, 2^16919428 is an apocalyptic number.

It is an amenable number.

16919428 is a deficient number, since it is larger than the sum of its proper divisors (13644924).

16919428 is a wasteful number, since it uses less digits than its factorization.

16919428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136482 (or 136480 counting only the distinct ones).

The product of its digits is 31104, while the sum is 40.

The square root of 16919428 is about 4113.3232306737. The cubic root of 16919428 is about 256.7212934459.

The spelling of 16919428 in words is "sixteen million, nine hundred nineteen thousand, four hundred twenty-eight".