20146303 has 4 divisors (see below), whose sum is σ = 20158488. Its totient is φ = 20134120.

The previous prime is 20146279. The next prime is 20146319. The reversal of 20146303 is 30364102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20146303 - 2⁹ = 20145791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20146363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3133 + ... + 7078.

It is an arithmetic number, because the mean of its divisors is an integer number (5039622).

Almost surely, 2^20146303 is an apocalyptic number.

20146303 is a deficient number, since it is larger than the sum of its proper divisors (12185).

20146303 is a wasteful number, since it uses less digits than its factorization.

20146303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12184.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 20146303 is about 4488.4633227865. The cubic root of 20146303 is about 272.1020333393.

It can be divided in two parts, 20146 and 303, that added together give a square (20449 = 143²).

The spelling of 20146303 in words is "twenty million, one hundred forty-six thousand, three hundred three".