20423302 has 4 divisors (see below), whose sum is σ = 30634956. Its totient is φ = 10211650.

The previous prime is 20423257. The next prime is 20423329. The reversal of 20423302 is 20332402.

20423302 is nontrivially palindromic in base 5.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20332402 = 2 ⋅10166201.

It is a super-2 number, since 2×20423302² = 834222529166408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5105824 + ... + 5105827.

It is an arithmetic number, because the mean of its divisors is an integer number (7658739).

Almost surely, 2^20423302 is an apocalyptic number.

20423302 is a deficient number, since it is larger than the sum of its proper divisors (10211654).

20423302 is a wasteful number, since it uses less digits than its factorization.

20423302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10211653.

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 20423302 is about 4519.2147547998. The cubic root of 20423302 is about 273.3434383864.

Adding to 20423302 its reverse (20332402), we get a palindrome (40755704).

The spelling of 20423302 in words is "twenty million, four hundred twenty-three thousand, three hundred two".