20124554 has 8 divisors (see below), whose sum is σ = 30829248. Its totient is φ = 9848140.

The previous prime is 20124551. The next prime is 20124569. The reversal of 20124554 is 45542102.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (20124551) 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, 106952 + ... + 107139.

It is an arithmetic number, because the mean of its divisors is an integer number (3853656).

Almost surely, 2^20124554 is an apocalyptic number.

20124554 is a deficient number, since it is larger than the sum of its proper divisors (10704694).

20124554 is a wasteful number, since it uses less digits than its factorization.

20124554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214140.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 20124554 is about 4486.0399017396. The cubic root of 20124554 is about 272.0040819024.

Adding to 20124554 its reverse (45542102), we get a palindrome (65666656).

The spelling of 20124554 in words is "twenty million, one hundred twenty-four thousand, five hundred fifty-four".