20303045 has 32 divisors (see below), whose sum is σ = 29272320. Its totient is φ = 13224960.

The previous prime is 20303033. The next prime is 20303069. The reversal of 20303045 is 54030302.

It is not a de Polignac number, because 20303045 - 2¹⁸ = 20040901 is a prime.

20303045 is a modest number, since divided by 3045 gives 2030 as remainder.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 84125 + ... + 84365.

It is an arithmetic number, because the mean of its divisors is an integer number (914760).

Almost surely, 2^20303045 is an apocalyptic number.

It is an amenable number.

20303045 is a deficient number, since it is larger than the sum of its proper divisors (8969275).

20303045 is a wasteful number, since it uses less digits than its factorization.

20303045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365.

The product of its (nonzero) digits is 360, while the sum is 17.

The square root of 20303045 is about 4505.8900341664. The cubic root of 20303045 is about 272.8058793449.

Adding to 20303045 its reverse (54030302), we get a palindrome (74333347).

The spelling of 20303045 in words is "twenty million, three hundred three thousand, forty-five".