20470293 has 8 divisors (see below), whose sum is σ = 30326400. Its totient is φ = 13646844.

The previous prime is 20470291. The next prime is 20470297. The reversal of 20470293 is 39207402.

It is not a de Polignac number, because 20470293 - 2¹ = 20470291 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 758159 = 20470293 / (2 + 0 + 4 + 7 + 0 + 2 + 9 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20470291) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 379053 + ... + 379106.

It is an arithmetic number, because the mean of its divisors is an integer number (3790800).

Almost surely, 2^20470293 is an apocalyptic number.

It is an amenable number.

20470293 is a deficient number, since it is larger than the sum of its proper divisors (9856107).

20470293 is an equidigital number, since it uses as much as digits as its factorization.

20470293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758168 (or 758162 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 20470293 is about 4524.4107903682. The cubic root of 20470293 is about 273.5529187608.

Adding to 20470293 its reverse (39207402), we get a palindrome (59677695).

The spelling of 20470293 in words is "twenty million, four hundred seventy thousand, two hundred ninety-three".