20040454 has 8 divisors (see below), whose sum is σ = 34355088. Its totient is φ = 8588760.

The previous prime is 20040443. The next prime is 20040463. The reversal of 20040454 is 45404002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20040454² = 803239593052232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 715717 + ... + 715744.

It is an arithmetic number, because the mean of its divisors is an integer number (4294386).

Almost surely, 2^20040454 is an apocalyptic number.

20040454 is a deficient number, since it is larger than the sum of its proper divisors (14314634).

20040454 is a wasteful number, since it uses less digits than its factorization.

20040454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1431470.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 20040454 is about 4476.6565648930. The cubic root of 20040454 is about 271.6246534869.

Adding to 20040454 its reverse (45404002), we get a palindrome (65444456).

The spelling of 20040454 in words is "twenty million, forty thousand, four hundred fifty-four".