20022709 has 8 divisors (see below), whose sum is σ = 22923648. Its totient is φ = 17131920.

The previous prime is 20022707. The next prime is 20022733. The reversal of 20022709 is 90722002.

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

It is a cyclic number.

It is not a de Polignac number, because 20022709 - 2¹ = 20022707 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20022709.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022707) 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, 2319 + ... + 6739.

It is an arithmetic number, because the mean of its divisors is an integer number (2865456).

Almost surely, 2^20022709 is an apocalyptic number.

It is an amenable number.

20022709 is a deficient number, since it is larger than the sum of its proper divisors (2900939).

20022709 is an equidigital number, since it uses as much as digits as its factorization.

20022709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5075.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 20022709 is about 4474.6741780827. The cubic root of 20022709 is about 271.5444589828.

The spelling of 20022709 in words is "twenty million, twenty-two thousand, seven hundred nine".