20569412 has 6 divisors (see below), whose sum is σ = 35996478. Its totient is φ = 10284704.

The previous prime is 20569403. The next prime is 20569433. The reversal of 20569412 is 21496502.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 18541636 + 2027776 = 4306^2 + 1424^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2571173 + ... + 2571180.

It is an arithmetic number, because the mean of its divisors is an integer number (5999413).

Almost surely, 2^20569412 is an apocalyptic number.

It is an amenable number.

20569412 is a deficient number, since it is larger than the sum of its proper divisors (15427066).

20569412 is a wasteful number, since it uses less digits than its factorization.

20569412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5142357 (or 5142355 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 20569412 is about 4535.3513645582. The cubic root of 20569412 is about 273.9937306538.

The spelling of 20569412 in words is "twenty million, five hundred sixty-nine thousand, four hundred twelve".