20909422 has 8 divisors (see below), whose sum is σ = 33209136. Its totient is φ = 9839712.

The previous prime is 20909419. The next prime is 20909431. The reversal of 20909422 is 22490902.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 307458 + ... + 307525.

It is an arithmetic number, because the mean of its divisors is an integer number (4151142).

Almost surely, 2^20909422 is an apocalyptic number.

20909422 is a deficient number, since it is larger than the sum of its proper divisors (12299714).

20909422 is a wasteful number, since it uses less digits than its factorization.

20909422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615002.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 20909422 is about 4572.6821450873. The cubic root of 20909422 is about 275.4951827380.

The spelling of 20909422 in words is "twenty million, nine hundred nine thousand, four hundred twenty-two".