20719122 has 16 divisors (see below), whose sum is σ = 41544480. Its totient is φ = 6888672.

The previous prime is 20719121. The next prime is 20719157. The reversal of 20719122 is 22191702.

It is a junction number, because it is equal to n+sod(n) for n = 20719092 and 20719101.

It is not an unprimeable number, because it can be changed into a prime (20719121) 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, 1768 + ... + 6675.

It is an arithmetic number, because the mean of its divisors is an integer number (2596530).

Almost surely, 2^20719122 is an apocalyptic number.

20719122 is an abundant number, since it is smaller than the sum of its proper divisors (20825358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20719122 is a wasteful number, since it uses less digits than its factorization.

20719122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8857.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 20719122 is about 4551.8262269116. The cubic root of 20719122 is about 274.6568590642.

The spelling of 20719122 in words is "twenty million, seven hundred nineteen thousand, one hundred twenty-two".