20036445 has 32 divisors (see below), whose sum is σ = 37666944. Its totient is φ = 8966400.

The previous prime is 20036389. The next prime is 20036461. The reversal of 20036445 is 54463002.

It is not a de Polignac number, because 20036445 - 2⁹ = 20035933 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2526 + ... + 6815.

It is an arithmetic number, because the mean of its divisors is an integer number (1177092).

Almost surely, 2^20036445 is an apocalyptic number.

It is an amenable number.

20036445 is a deficient number, since it is larger than the sum of its proper divisors (17630499).

20036445 is a wasteful number, since it uses less digits than its factorization.

20036445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9373.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 20036445 is about 4476.2087752919. The cubic root of 20036445 is about 271.6065398610.

Adding to 20036445 its reverse (54463002), we get a palindrome (74499447).

It can be divided in two parts, 2003 and 6445, that added together give a palindrome (8448).

The spelling of 20036445 in words is "twenty million, thirty-six thousand, four hundred forty-five".