20062209 has 8 divisors (see below), whose sum is σ = 27371872. Its totient is φ = 13063680.

The previous prime is 20062201. The next prime is 20062223. The reversal of 20062209 is 90226002.

It is a happy number.

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

It is not a de Polignac number, because 20062209 - 2³ = 20062201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20062201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77632 + ... + 77889.

It is an arithmetic number, because the mean of its divisors is an integer number (3421484).

It is a Proth number, since it is equal to 2449 ⋅ 2¹³ + 1 and 2449 < 2¹³.

Almost surely, 2^20062209 is an apocalyptic number.

It is an amenable number.

20062209 is a deficient number, since it is larger than the sum of its proper divisors (7309663).

20062209 is a wasteful number, since it uses less digits than its factorization.

20062209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155567.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 20062209 is about 4479.0857326021. The cubic root of 20062209 is about 271.7229057083.

The spelling of 20062209 in words is "twenty million, sixty-two thousand, two hundred nine".