20570212 has 12 divisors (see below), whose sum is σ = 38767036. Its totient is φ = 9493920.

The previous prime is 20570197. The next prime is 20570227. The reversal of 20570212 is 21207502.

It is an interprime number because it is at equal distance from previous prime (20570197) and next prime (20570227).

It can be written as a sum of positive squares in 2 ways, for example, as 1069156 + 19501056 = 1034^2 + 4416^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20570212.

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 3 ways as a sum of consecutive naturals, for example, 197739 + ... + 197842.

Almost surely, 2^20570212 is an apocalyptic number.

It is an amenable number.

20570212 is a deficient number, since it is larger than the sum of its proper divisors (18196824).

20570212 is a wasteful number, since it uses less digits than its factorization.

20570212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395598 (or 395596 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 20570212 is about 4535.4395597340. The cubic root of 20570212 is about 273.9972827265.

Adding to 20570212 its reverse (21207502), we get a palindrome (41777714).

The spelling of 20570212 in words is "twenty million, five hundred seventy thousand, two hundred twelve".