19444272 has 20 divisors (see below), whose sum is σ = 50231160. Its totient is φ = 6481408.

The previous prime is 19444261. The next prime is 19444279. The reversal of 19444272 is 27244491.

It is not an unprimeable number, because it can be changed into a prime (19444279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202497 + ... + 202592.

It is an arithmetic number, because the mean of its divisors is an integer number (2511558).

Almost surely, 2^19444272 is an apocalyptic number.

19444272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19444272 is an abundant number, since it is smaller than the sum of its proper divisors (30786888).

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

19444272 is a wasteful number, since it uses less digits than its factorization.

19444272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405100 (or 405094 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 19444272 is about 4409.5659650356. The cubic root of 19444272 is about 268.9039794013.

It can be divided in two parts, 1944 and 4272, that added together give a triangular number (6216 = T₁₁₁).

The spelling of 19444272 in words is "nineteen million, four hundred forty-four thousand, two hundred seventy-two".