20354146 has 8 divisors (see below), whose sum is σ = 30551040. Its totient is φ = 10170468.

The previous prime is 20354129. The next prime is 20354153. The reversal of 20354146 is 64145302.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20354146.

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, 2815 + ... + 6973.

It is an arithmetic number, because the mean of its divisors is an integer number (3818880).

Almost surely, 2^20354146 is an apocalyptic number.

20354146 is a deficient number, since it is larger than the sum of its proper divisors (10196894).

20354146 is a wasteful number, since it uses less digits than its factorization.

20354146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6608.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 20354146 is about 4511.5569374663. The cubic root of 20354146 is about 273.0345638232.

Adding to 20354146 its reverse (64145302), we get a palindrome (84499448).

The spelling of 20354146 in words is "twenty million, three hundred fifty-four thousand, one hundred forty-six".