19798272 has 108 divisors (see below), whose sum is σ = 61567324. Its totient is φ = 6082560.

The previous prime is 19798267. The next prime is 19798291. The reversal of 19798272 is 27289791.

It can be written as a sum of positive squares in 2 ways, for example, as 9144576 + 10653696 = 3024^2 + 3264^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29622 + ... + 30282.

Almost surely, 2^19798272 is an apocalyptic number.

19798272 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 19798272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30783662).

19798272 is an abundant number, since it is smaller than the sum of its proper divisors (41769052).

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

19798272 is a wasteful number, since it uses less digits than its factorization.

19798272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696 (or 679 counting only the distinct ones).

The product of its digits is 127008, while the sum is 45.

The square root of 19798272 is about 4449.5249184604. The cubic root of 19798272 is about 270.5260525928.

The spelling of 19798272 in words is "nineteen million, seven hundred ninety-eight thousand, two hundred seventy-two".