20435454 has 48 divisors (see below), whose sum is σ = 49768992. Its totient is φ = 6012864.

The previous prime is 20435447. The next prime is 20435489. The reversal of 20435454 is 45453402.

20435454 is a `hidden beast` number, since 204 + 3 + 5 + 454 = 666.

It is a super-2 number, since 2×20435454² = 835215560372232, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3484 + ... + 7280.

It is an arithmetic number, because the mean of its divisors is an integer number (1036854).

Almost surely, 2^20435454 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20435454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24884496).

20435454 is an abundant number, since it is smaller than the sum of its proper divisors (29333538).

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

20435454 is a wasteful number, since it uses less digits than its factorization.

20435454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3841 (or 3838 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 20435454 is about 4520.5590362255. The cubic root of 20435454 is about 273.3976413564.

Adding to 20435454 its reverse (45453402), we get a palindrome (65888856).

The spelling of 20435454 in words is "twenty million, four hundred thirty-five thousand, four hundred fifty-four".