20454104 has 16 divisors (see below), whose sum is σ = 41838120. Its totient is φ = 9297280.

The previous prime is 20454103. The next prime is 20454113. The reversal of 20454104 is 40145402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20454103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116129 + ... + 116304.

Almost surely, 2^20454104 is an apocalyptic number.

It is an amenable number.

20454104 is an abundant number, since it is smaller than the sum of its proper divisors (21384016).

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

20454104 is a wasteful number, since it uses less digits than its factorization.

20454104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232450 (or 232446 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 20454104 is about 4522.6213637668. The cubic root of 20454104 is about 273.4807863271.

Adding to 20454104 its reverse (40145402), we get a palindrome (60599506).

The spelling of 20454104 in words is "twenty million, four hundred fifty-four thousand, one hundred four".