20343597 has 8 divisors (see below), whose sum is σ = 27168480. Its totient is φ = 13540560.

The previous prime is 20343593. The next prime is 20343607. The reversal of 20343597 is 79534302.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20343597 - 2² = 20343593 is a prime.

It is a Smith number, since the sum of its digits (33) 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 not an unprimeable number, because it can be changed into a prime (20343593) 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, 3147 + ... + 7112.

It is an arithmetic number, because the mean of its divisors is an integer number (3396060).

Almost surely, 2^20343597 is an apocalyptic number.

It is an amenable number.

20343597 is a deficient number, since it is larger than the sum of its proper divisors (6824883).

20343597 is a wasteful number, since it uses less digits than its factorization.

20343597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10923.

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 20343597 is about 4510.3876773510. The cubic root of 20343597 is about 272.9873868772.

Adding to 20343597 its reverse (79534302), we get a palindrome (99877899).

The spelling of 20343597 in words is "twenty million, three hundred forty-three thousand, five hundred ninety-seven".