20162397 has 8 divisors (see below), whose sum is σ = 26917056. Its totient is φ = 13424672.

The previous prime is 20162371. The next prime is 20162413. The reversal of 20162397 is 79326102.

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 20162397 - 2⁶ = 20162333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20162347) 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, 1128 + ... + 6449.

It is an arithmetic number, because the mean of its divisors is an integer number (3364632).

Almost surely, 2^20162397 is an apocalyptic number.

It is an amenable number.

20162397 is a deficient number, since it is larger than the sum of its proper divisors (6754659).

20162397 is an equidigital number, since it uses as much as digits as its factorization.

20162397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8467.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 20162397 is about 4490.2557833602. The cubic root of 20162397 is about 272.1744708567.

Adding to 20162397 its reverse (79326102), we get a palindrome (99488499).

The spelling of 20162397 in words is "twenty million, one hundred sixty-two thousand, three hundred ninety-seven".