20136045 has 8 divisors (see below), whose sum is σ = 32217696. Its totient is φ = 10739216.

The previous prime is 20136037. The next prime is 20136047. The reversal of 20136045 is 54063102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20136045 - 2³ = 20136037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20136047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 671187 + ... + 671216.

It is an arithmetic number, because the mean of its divisors is an integer number (4027212).

Almost surely, 2^20136045 is an apocalyptic number.

It is an amenable number.

20136045 is a deficient number, since it is larger than the sum of its proper divisors (12081651).

20136045 is a wasteful number, since it uses less digits than its factorization.

20136045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1342411.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 20136045 is about 4487.3204699464. The cubic root of 20136045 is about 272.0558429534.

Adding to 20136045 its reverse (54063102), we get a palindrome (74199147).

The spelling of 20136045 in words is "twenty million, one hundred thirty-six thousand, forty-five".