20395297 has 8 divisors (see below), whose sum is σ = 22337280. Its totient is φ = 18506640.

The previous prime is 20395283. The next prime is 20395313. The reversal of 20395297 is 79259302.

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 20395297 - 2⁷ = 20395169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20395217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12529 + ... + 14062.

It is an arithmetic number, because the mean of its divisors is an integer number (2792160).

Almost surely, 2^20395297 is an apocalyptic number.

It is an amenable number.

20395297 is a deficient number, since it is larger than the sum of its proper divisors (1941983).

20395297 is a wasteful number, since it uses less digits than its factorization.

20395297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26663.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 20395297 is about 4516.1152553937. The cubic root of 20395297 is about 273.2184425268.

The spelling of 20395297 in words is "twenty million, three hundred ninety-five thousand, two hundred ninety-seven".