20366212 has 6 divisors (see below), whose sum is σ = 35640878. Its totient is φ = 10183104.

The previous prime is 20366183. The next prime is 20366237. The reversal of 20366212 is 21266302.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10342656 + 10023556 = 3216^2 + 3166^2 .

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 as a sum of consecutive naturals, namely, 2545773 + ... + 2545780.

Almost surely, 2^20366212 is an apocalyptic number.

It is an amenable number.

20366212 is a deficient number, since it is larger than the sum of its proper divisors (15274666).

20366212 is a wasteful number, since it uses less digits than its factorization.

20366212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5091557 (or 5091555 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 20366212 is about 4512.8939717215. The cubic root of 20366212 is about 273.0885050739.

The spelling of 20366212 in words is "twenty million, three hundred sixty-six thousand, two hundred twelve".