20570226 has 8 divisors (see below), whose sum is σ = 41140464. Its totient is φ = 6856740.

The previous prime is 20570197. The next prime is 20570227. The reversal of 20570226 is 62207502.

It is a sphenic number, since it is the product of 3 distinct primes.

20570226 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 20570196 and 20570205.

It is not an unprimeable number, because it can be changed into a prime (20570227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1714180 + ... + 1714191.

It is an arithmetic number, because the mean of its divisors is an integer number (5142558).

Almost surely, 2^20570226 is an apocalyptic number.

20570226 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20570226 is a wasteful number, since it uses less digits than its factorization.

20570226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3428376.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 20570226 is about 4535.4411031343. The cubic root of 20570226 is about 273.9973448870.

Adding to 20570226 its reverse (62207502), we get a palindrome (82777728).

The spelling of 20570226 in words is "twenty million, five hundred seventy thousand, two hundred twenty-six".