20459422 has 4 divisors (see below), whose sum is σ = 30689136. Its totient is φ = 10229710.

The previous prime is 20459419. The next prime is 20459459. The reversal of 20459422 is 22495402.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5114854 + ... + 5114857.

It is an arithmetic number, because the mean of its divisors is an integer number (7672284).

Almost surely, 2^20459422 is an apocalyptic number.

20459422 is a deficient number, since it is larger than the sum of its proper divisors (10229714).

20459422 is a wasteful number, since it uses less digits than its factorization.

20459422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10229713.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 20459422 is about 4523.2092589223. The cubic root of 20459422 is about 273.5044856427.

The spelling of 20459422 in words is "twenty million, four hundred fifty-nine thousand, four hundred twenty-two".