20395245 has 32 divisors (see below), whose sum is σ = 36013824. Its totient is φ = 9792000.

The previous prime is 20395231. The next prime is 20395283. The reversal of 20395245 is 54259302.

It is not a de Polignac number, because 20395245 - 2⁴ = 20395229 is a prime.

It is a super-2 number, since 2×20395245² = 831932037220050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 6720 + ... + 9270.

It is an arithmetic number, because the mean of its divisors is an integer number (1125432).

Almost surely, 2^20395245 is an apocalyptic number.

It is an amenable number.

20395245 is a deficient number, since it is larger than the sum of its proper divisors (15618579).

20395245 is a wasteful number, since it uses less digits than its factorization.

20395245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2613.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 20395245 is about 4516.1094982296. The cubic root of 20395245 is about 273.2182103267.

The spelling of 20395245 in words is "twenty million, three hundred ninety-five thousand, two hundred forty-five".