19428016 has 20 divisors (see below), whose sum is σ = 37714600. Its totient is φ = 9695232.

The previous prime is 19428011. The next prime is 19428023. The reversal of 19428016 is 61082491.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (19428011) 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, 11515 + ... + 13093.

It is an arithmetic number, because the mean of its divisors is an integer number (1885730).

Almost surely, 2^19428016 is an apocalyptic number.

19428016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19428016 is a deficient number, since it is larger than the sum of its proper divisors (18286584).

19428016 is a wasteful number, since it uses less digits than its factorization.

19428016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2356 (or 2350 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 19428016 is about 4407.7223143025. The cubic root of 19428016 is about 268.8290212194.

The spelling of 19428016 in words is "nineteen million, four hundred twenty-eight thousand, sixteen".