20348269 has 8 divisors (see below), whose sum is σ = 21609720. Its totient is φ = 19094016.

The previous prime is 20348257. The next prime is 20348281. The reversal of 20348269 is 96284302.

It is an interprime number because it is at equal distance from previous prime (20348257) and next prime (20348281).

It can be written as a sum of positive squares in 4 ways, for example, as 6375625 + 13972644 = 2525^2 + 3738^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20348269 is a prime.

It is a super-2 number, since 2×20348269² = 828104102592722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20348219) 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, 4737 + ... + 7945.

It is an arithmetic number, because the mean of its divisors is an integer number (2701215).

Almost surely, 2^20348269 is an apocalyptic number.

It is an amenable number.

20348269 is a deficient number, since it is larger than the sum of its proper divisors (1261451).

20348269 is a wasteful number, since it uses less digits than its factorization.

20348269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3599.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 20348269 is about 4510.9055631880. The cubic root of 20348269 is about 273.0082828779.

The spelling of 20348269 in words is "twenty million, three hundred forty-eight thousand, two hundred sixty-nine".