19040016 has 20 divisors (see below), whose sum is σ = 49186832. Its totient is φ = 6346656.

The previous prime is 19040009. The next prime is 19040023. The reversal of 19040016 is 61004091.

It is an interprime number because it is at equal distance from previous prime (19040009) and next prime (19040023).

It is a junction number, because it is equal to n+sod(n) for n = 19039974 and 19040001.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198286 + ... + 198381.

Almost surely, 2^19040016 is an apocalyptic number.

19040016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19040016 is an abundant number, since it is smaller than the sum of its proper divisors (30146816).

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

19040016 is a wasteful number, since it uses less digits than its factorization.

19040016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396678 (or 396672 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 19040016 is about 4363.4866792509. The cubic root of 19040016 is about 267.0273646714.

The spelling of 19040016 in words is "nineteen million, forty thousand, sixteen".