20361045 has 16 divisors (see below), whose sum is σ = 33701760. Its totient is φ = 10484544.

The previous prime is 20361037. The next prime is 20361101. The reversal of 20361045 is 54016302.

It is a happy number.

It is not a de Polignac number, because 20361045 - 2³ = 20361037 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22969 + ... + 23838.

It is an arithmetic number, because the mean of its divisors is an integer number (2106360).

Almost surely, 2^20361045 is an apocalyptic number.

It is an amenable number.

20361045 is a deficient number, since it is larger than the sum of its proper divisors (13340715).

20361045 is a wasteful number, since it uses less digits than its factorization.

20361045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46844.

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

The square root of 20361045 is about 4512.3214646122. The cubic root of 20361045 is about 273.0654085247.

Adding to 20361045 its reverse (54016302), we get a palindrome (74377347).

It can be divided in two parts, 2036 and 1045, that added together give a triangular number (3081 = T₇₈).

The spelling of 20361045 in words is "twenty million, three hundred sixty-one thousand, forty-five".