20830272 has 112 divisors (see below), whose sum is σ = 59253120. Its totient is φ = 6443008.

The previous prime is 20830267. The next prime is 20830291. The reversal of 20830272 is 27203802.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234004 + ... + 234092.

Almost surely, 2^20830272 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 20830272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29626560).

20830272 is an abundant number, since it is smaller than the sum of its proper divisors (38422848).

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

20830272 is a wasteful number, since it uses less digits than its factorization.

20830272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 170 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 20830272 is about 4564.0192812914. The cubic root of 20830272 is about 275.1471256811.

The spelling of 20830272 in words is "twenty million, eight hundred thirty thousand, two hundred seventy-two".