20454318 has 24 divisors (see below), whose sum is σ = 44760456. Its totient is φ = 6750000.

The previous prime is 20454311. The next prime is 20454331. The reversal of 20454318 is 81345402.

It is a junction number, because it is equal to n+sod(n) for n = 20454291 and 20454300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20454311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3808 + ... + 7443.

It is an arithmetic number, because the mean of its divisors is an integer number (1865019).

Almost surely, 2^20454318 is an apocalyptic number.

20454318 is an abundant number, since it is smaller than the sum of its proper divisors (24306138).

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

20454318 is a wasteful number, since it uses less digits than its factorization.

20454318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11360 (or 11357 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 20454318 is about 4522.6450225504. The cubic root of 20454318 is about 273.4817400833.

The spelling of 20454318 in words is "twenty million, four hundred fifty-four thousand, three hundred eighteen".