20342272 has 40 divisors (see below), whose sum is σ = 41321016. Its totient is φ = 10002432.

The previous prime is 20342269. The next prime is 20342303. The reversal of 20342272 is 27224302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34008 + ... + 34600.

Almost surely, 2^20342272 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 20342272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20660508).

20342272 is an abundant number, since it is smaller than the sum of its proper divisors (20978744).

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

20342272 is an frugal number, since it uses more digits than its factorization.

20342272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678 (or 662 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 20342272 is about 4510.2407917981. The cubic root of 20342272 is about 272.9814600960.

Adding to 20342272 its reverse (27224302), we get a palindrome (47566574).

The spelling of 20342272 in words is "twenty million, three hundred forty-two thousand, two hundred seventy-two".