20002423 has 8 divisors (see below), whose sum is σ = 22943520. Its totient is φ = 17082240.

The previous prime is 20002417. The next prime is 20002429. The reversal of 20002423 is 32420002.

It is an interprime number because it is at equal distance from previous prime (20002417) and next prime (20002429).

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

It is a de Polignac number, because none of the positive numbers 2^k-20002423 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 (20002429) 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, 3118 + ... + 7051.

It is an arithmetic number, because the mean of its divisors is an integer number (2867940).

Almost surely, 2^20002423 is an apocalyptic number.

20002423 is a deficient number, since it is larger than the sum of its proper divisors (2941097).

20002423 is a wasteful number, since it uses less digits than its factorization.

20002423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10457.

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 20002423 is about 4472.4068464307. The cubic root of 20002423 is about 271.4527229400.

Adding to 20002423 its reverse (32420002), we get a palindrome (52422425).

The spelling of 20002423 in words is "twenty million, two thousand, four hundred twenty-three".