20382897 has 8 divisors (see below), whose sum is σ = 27275040. Its totient is φ = 13539680.

The previous prime is 20382889. The next prime is 20382917. The reversal of 20382897 is 79828302.

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 20382897 - 2³ = 20382889 is a prime.

It is a super-2 number, since 2×20382897² = 830924980225218, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20382697) 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, 11247 + ... + 12932.

It is an arithmetic number, because the mean of its divisors is an integer number (3409380).

Almost surely, 2^20382897 is an apocalyptic number.

It is an amenable number.

20382897 is a deficient number, since it is larger than the sum of its proper divisors (6892143).

20382897 is a wasteful number, since it uses less digits than its factorization.

20382897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24463.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 20382897 is about 4514.7421853302. The cubic root of 20382897 is about 273.1630605513.

The spelling of 20382897 in words is "twenty million, three hundred eighty-two thousand, eight hundred ninety-seven".