20814154 has 8 divisors (see below), whose sum is σ = 33057828. Its totient is φ = 9794880.

The previous prime is 20814133. The next prime is 20814161. The reversal of 20814154 is 45141802.

It can be written as a sum of positive squares in 2 ways, for example, as 19053225 + 1760929 = 4365^2 + 1327^2 .

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

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 3 ways as a sum of consecutive naturals, for example, 306057 + ... + 306124.

Almost surely, 2^20814154 is an apocalyptic number.

20814154 is a deficient number, since it is larger than the sum of its proper divisors (12243674).

20814154 is a wasteful number, since it uses less digits than its factorization.

20814154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612200.

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 20814154 is about 4562.2531714056. The cubic root of 20814154 is about 275.0761397986.

Adding to 20814154 its reverse (45141802), we get a palindrome (65955956).

The spelling of 20814154 in words is "twenty million, eight hundred fourteen thousand, one hundred fifty-four".