20741146 has 8 divisors (see below), whose sum is σ = 31170240. Its totient is φ = 10351068.

The previous prime is 20741129. The next prime is 20741153. The reversal of 20741146 is 64114702.

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 20741146.

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, 8386 + ... + 10573.

It is an arithmetic number, because the mean of its divisors is an integer number (3896280).

Almost surely, 2^20741146 is an apocalyptic number.

20741146 is a deficient number, since it is larger than the sum of its proper divisors (10429094).

20741146 is a wasteful number, since it uses less digits than its factorization.

20741146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19508.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 20741146 is about 4554.2448331200. The cubic root of 20741146 is about 274.7541427972.

Adding to 20741146 its reverse (64114702), we get a palindrome (84855848).

The spelling of 20741146 in words is "twenty million, seven hundred forty-one thousand, one hundred forty-six".