19420116 has 48 divisors (see below), whose sum is σ = 46986240. Its totient is φ = 6238080.

The previous prime is 19420081. The next prime is 19420123. The reversal of 19420116 is 61102491.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84690 + ... + 84918.

It is an arithmetic number, because the mean of its divisors is an integer number (978880).

Almost surely, 2^19420116 is an apocalyptic number.

It is an amenable number.

19420116 is an abundant number, since it is smaller than the sum of its proper divisors (27566124).

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

19420116 is a wasteful number, since it uses less digits than its factorization.

19420116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464 (or 462 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 19420116 is about 4406.8260687257. The cubic root of 19420116 is about 268.7925783630.

The spelling of 19420116 in words is "nineteen million, four hundred twenty thousand, one hundred sixteen".