20434318 has 8 divisors (see below), whose sum is σ = 31399200. Its totient is φ = 9967920.

The previous prime is 20434259. The next prime is 20434319. The reversal of 20434318 is 81343402.

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

It is a super-2 number, since 2×20434318² = 835122704250248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20434292 and 20434301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20434319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124518 + ... + 124681.

It is an arithmetic number, because the mean of its divisors is an integer number (3924900).

Almost surely, 2^20434318 is an apocalyptic number.

20434318 is a deficient number, since it is larger than the sum of its proper divisors (10964882).

20434318 is a wasteful number, since it uses less digits than its factorization.

20434318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249242.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 20434318 is about 4520.4333863027. The cubic root of 20434318 is about 273.3925752349.

The spelling of 20434318 in words is "twenty million, four hundred thirty-four thousand, three hundred eighteen".