19198872 has 96 divisors (see below), whose sum is σ = 64846080. Its totient is φ = 4985280.

The previous prime is 19198867. The next prime is 19198877. The reversal of 19198872 is 27889191.

It is an interprime number because it is at equal distance from previous prime (19198867) and next prime (19198877).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19198877) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3813 + ... + 7275.

It is an arithmetic number, because the mean of its divisors is an integer number (675480).

Almost surely, 2^19198872 is an apocalyptic number.

19198872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19198872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32423040).

19198872 is an abundant number, since it is smaller than the sum of its proper divisors (45647208).

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

19198872 is a wasteful number, since it uses less digits than its factorization.

19198872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3493 (or 3486 counting only the distinct ones).

The product of its digits is 72576, while the sum is 45.

The square root of 19198872 is about 4381.6517433498. The cubic root of 19198872 is about 267.7679360387.

It can be divided in two parts, 19 and 198872, that added together give a palindrome (198891).

The spelling of 19198872 in words is "nineteen million, one hundred ninety-eight thousand, eight hundred seventy-two".