20045354 has 16 divisors (see below), whose sum is σ = 34432128. Its totient is φ = 8573712.

The previous prime is 20045339. The next prime is 20045371. The reversal of 20045354 is 45354002.

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 7 ways as a sum of consecutive naturals, for example, 7952 + ... + 10164.

It is an arithmetic number, because the mean of its divisors is an integer number (2152008).

Almost surely, 2^20045354 is an apocalyptic number.

20045354 is a deficient number, since it is larger than the sum of its proper divisors (14386774).

20045354 is a wasteful number, since it uses less digits than its factorization.

20045354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2869.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 20045354 is about 4477.2038148827. The cubic root of 20045354 is about 271.6467895845.

Adding to 20045354 its reverse (45354002), we get a palindrome (65399356).

It can be divided in two parts, 200 and 45354, that added together give a palindrome (45554).

The spelling of 20045354 in words is "twenty million, forty-five thousand, three hundred fifty-four".