20335243 has 8 divisors (see below), whose sum is σ = 21420288. Its totient is φ = 19266984.

The previous prime is 20335229. The next prime is 20335253. The reversal of 20335243 is 34253302.

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-20335243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20335223) 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, 1671 + ... + 6592.

It is an arithmetic number, because the mean of its divisors is an integer number (2677536).

Almost surely, 2^20335243 is an apocalyptic number.

20335243 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20335243 is a deficient number, since it is larger than the sum of its proper divisors (1085045).

20335243 is a wasteful number, since it uses less digits than its factorization.

20335243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8393.

The product of its (nonzero) digits is 2160, while the sum is 22.

The square root of 20335243 is about 4509.4614977844. The cubic root of 20335243 is about 272.9500147765.

Adding to 20335243 its reverse (34253302), we get a palindrome (54588545).

The spelling of 20335243 in words is "twenty million, three hundred thirty-five thousand, two hundred forty-three".