20544146 has 8 divisors (see below), whose sum is σ = 35218560. Its totient is φ = 8804628.

The previous prime is 20544119. The next prime is 20544169. The reversal of 20544146 is 64144502.

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, 733706 + ... + 733733.

It is an arithmetic number, because the mean of its divisors is an integer number (4402320).

Almost surely, 2^20544146 is an apocalyptic number.

20544146 is a deficient number, since it is larger than the sum of its proper divisors (14674414).

20544146 is a wasteful number, since it uses less digits than its factorization.

20544146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467448.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 20544146 is about 4532.5650574482. The cubic root of 20544146 is about 273.8814998975.

Adding to 20544146 its reverse (64144502), we get a palindrome (84688648).

The spelling of 20544146 in words is "twenty million, five hundred forty-four thousand, one hundred forty-six".