20343545 has 8 divisors (see below), whose sum is σ = 24777024. Its totient is φ = 16031664.

The previous prime is 20343517. The next prime is 20343553. The reversal of 20343545 is 54534302.

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 20343545 - 2⁶ = 20343481 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30029 + ... + 30698.

It is an arithmetic number, because the mean of its divisors is an integer number (3097128).

Almost surely, 2^20343545 is an apocalyptic number.

It is an amenable number.

20343545 is a deficient number, since it is larger than the sum of its proper divisors (4433479).

20343545 is an equidigital number, since it uses as much as digits as its factorization.

20343545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60799.

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 20343545 is about 4510.3819128761. The cubic root of 20343545 is about 272.9871542838.

Adding to 20343545 its reverse (54534302), we get a palindrome (74877847).

The spelling of 20343545 in words is "twenty million, three hundred forty-three thousand, five hundred forty-five".