20383272 has 256 divisors, whose sum is σ = 74995200. Its totient is φ = 4976640.

The previous prime is 20383249. The next prime is 20383277. The reversal of 20383272 is 27238302.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20383277) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 334122 + ... + 334182.

It is an arithmetic number, because the mean of its divisors is an integer number (292950).

Almost surely, 2^20383272 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 20383272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37497600).

20383272 is an abundant number, since it is smaller than the sum of its proper divisors (54611928).

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

20383272 is a wasteful number, since it uses less digits than its factorization.

20383272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 20383272 is about 4514.7837157498. The cubic root of 20383272 is about 273.1647357387.

The spelling of 20383272 in words is "twenty million, three hundred eighty-three thousand, two hundred seventy-two".