20798272 has 56 divisors (see below), whose sum is σ = 46524672. Its totient is φ = 9139200.

The previous prime is 20798263. The next prime is 20798317. The reversal of 20798272 is 27289702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21348 + ... + 22300.

Almost surely, 2^20798272 is an apocalyptic number.

20798272 is a gapful number since it is divisible by the number (22) 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 20798272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23262336).

20798272 is an abundant number, since it is smaller than the sum of its proper divisors (25726400).

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

20798272 is a wasteful number, since it uses less digits than its factorization.

20798272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007 (or 997 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 20798272 is about 4560.5122519296. The cubic root of 20798272 is about 275.0061574379.

The spelling of 20798272 in words is "twenty million, seven hundred ninety-eight thousand, two hundred seventy-two".