20045395 has 16 divisors (see below), whose sum is σ = 24896160. Its totient is φ = 15485184.

The previous prime is 20045387. The next prime is 20045411. The reversal of 20045395 is 59354002.

It is a cyclic number.

It is not a de Polignac number, because 20045395 - 2³ = 20045387 is a prime.

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, 17191 + ... + 18319.

It is an arithmetic number, because the mean of its divisors is an integer number (1556010).

Almost surely, 2^20045395 is an apocalyptic number.

20045395 is a deficient number, since it is larger than the sum of its proper divisors (4850765).

20045395 is a wasteful number, since it uses less digits than its factorization.

20045395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1254.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 20045395 is about 4477.2083936310. The cubic root of 20045395 is about 271.6469747897.

Adding to 20045395 its reverse (59354002), we get a palindrome (79399397).

The spelling of 20045395 in words is "twenty million, forty-five thousand, three hundred ninety-five".