20354454 has 12 divisors (see below), whose sum is σ = 44101356. Its totient is φ = 6784812.

The previous prime is 20354449. The next prime is 20354479. The reversal of 20354454 is 45445302.

20354454 is a `hidden beast` number, since 203 + 5 + 4 + 454 = 666.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 565384 + ... + 565419.

It is an arithmetic number, because the mean of its divisors is an integer number (3675113).

Almost surely, 2^20354454 is an apocalyptic number.

20354454 is an abundant number, since it is smaller than the sum of its proper divisors (23746902).

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

20354454 is a wasteful number, since it uses less digits than its factorization.

20354454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130811 (or 1130808 counting only the distinct ones).

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

The square root of 20354454 is about 4511.5910718947. The cubic root of 20354454 is about 273.0359410073.

Adding to 20354454 its reverse (45445302), we get a palindrome (65799756).

The spelling of 20354454 in words is "twenty million, three hundred fifty-four thousand, four hundred fifty-four".