20930272 has 48 divisors (see below), whose sum is σ = 45490032. Its totient is φ = 9400320.

The previous prime is 20930269. The next prime is 20930317. The reversal of 20930272 is 27203902.

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, 33838 + ... + 34450.

It is an arithmetic number, because the mean of its divisors is an integer number (947709).

Almost surely, 2^20930272 is an apocalyptic number.

20930272 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 20930272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22745016).

20930272 is an abundant number, since it is smaller than the sum of its proper divisors (24559760).

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

20930272 is a wasteful number, since it uses less digits than its factorization.

20930272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731 (or 723 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 20930272 is about 4574.9614206024. The cubic root of 20930272 is about 275.5867230711.

The spelling of 20930272 in words is "twenty million, nine hundred thirty thousand, two hundred seventy-two".