19243116 has 96 divisors (see below), whose sum is σ = 54190080. Its totient is φ = 5882112.

The previous prime is 19243093. The next prime is 19243117. The reversal of 19243116 is 61134291.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 19243116.

It is not an unprimeable number, because it can be changed into a prime (19243117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86181 + ... + 86403.

It is an arithmetic number, because the mean of its divisors is an integer number (564480).

Almost surely, 2^19243116 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19243116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27095040).

19243116 is an abundant number, since it is smaller than the sum of its proper divisors (34946964).

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

19243116 is a wasteful number, since it uses less digits than its factorization.

19243116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300 (or 292 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 19243116 is about 4386.6976189384. The cubic root of 19243116 is about 267.9734695650.

The spelling of 19243116 in words is "nineteen million, two hundred forty-three thousand, one hundred sixteen".