20354419 has 4 divisors (see below), whose sum is σ = 20688160. Its totient is φ = 20020680.

The previous prime is 20354413. The next prime is 20354441. The reversal of 20354419 is 91445302.

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

It is a cyclic number.

It is not a de Polignac number, because 20354419 - 2⁷ = 20354291 is a prime.

It is a super-2 number, since 2×20354419² = 828604745655122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20354413) 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, 166779 + ... + 166900.

It is an arithmetic number, because the mean of its divisors is an integer number (5172040).

Almost surely, 2^20354419 is an apocalyptic number.

20354419 is a deficient number, since it is larger than the sum of its proper divisors (333741).

20354419 is an equidigital number, since it uses as much as digits as its factorization.

20354419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333740.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 20354419 is about 4511.5871929954. The cubic root of 20354419 is about 273.0357845098.

The spelling of 20354419 in words is "twenty million, three hundred fifty-four thousand, four hundred nineteen".