20382273 has 20 divisors (see below), whose sum is σ = 31501140. Its totient is φ = 13118112.

The previous prime is 20382259. The next prime is 20382277. The reversal of 20382273 is 37228302.

It can be written as a sum of positive squares in 2 ways, for example, as 7935489 + 12446784 = 2817^2 + 3528^2 .

It is not a de Polignac number, because 20382273 - 2⁸ = 20382017 is a prime.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20382277) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1990 + ... + 6687.

It is an arithmetic number, because the mean of its divisors is an integer number (1575057).

Almost surely, 2^20382273 is an apocalyptic number.

It is an amenable number.

20382273 is a deficient number, since it is larger than the sum of its proper divisors (11118867).

20382273 is an equidigital number, since it uses as much as digits as its factorization.

20382273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8718 (or 8709 counting only the distinct ones).

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

The square root of 20382273 is about 4514.6730778651. The cubic root of 20382273 is about 273.1602729938.

The spelling of 20382273 in words is "twenty million, three hundred eighty-two thousand, two hundred seventy-three".