20323559 has 8 divisors (see below), whose sum is σ = 22323840. Its totient is φ = 18416376.

The previous prime is 20323547. The next prime is 20323561. The reversal of 20323559 is 95532302.

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

It is not a de Polignac number, because 20323559 - 2¹⁶ = 20258023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20323529) 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, 22817 + ... + 23690.

It is an arithmetic number, because the mean of its divisors is an integer number (2790480).

Almost surely, 2^20323559 is an apocalyptic number.

20323559 is a deficient number, since it is larger than the sum of its proper divisors (2000281).

20323559 is a wasteful number, since it uses less digits than its factorization.

20323559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46549.

The product of its (nonzero) digits is 8100, while the sum is 29.

The square root of 20323559 is about 4508.1658132771. The cubic root of 20323559 is about 272.8977285566.

The spelling of 20323559 in words is "twenty million, three hundred twenty-three thousand, five hundred fifty-nine".