20423476 has 12 divisors (see below), whose sum is σ = 36275008. Its totient is φ = 10059192.

The previous prime is 20423449. The next prime is 20423479. The reversal of 20423476 is 67432402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20423479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37836 + ... + 38371.

Almost surely, 2^20423476 is an apocalyptic number.

It is an amenable number.

20423476 is a deficient number, since it is larger than the sum of its proper divisors (15851532).

20423476 is a wasteful number, since it uses less digits than its factorization.

20423476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76278 (or 76276 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 20423476 is about 4519.2340058908. The cubic root of 20423476 is about 273.3442146504.

Adding to 20423476 its reverse (67432402), we get a palindrome (87855878).

The spelling of 20423476 in words is "twenty million, four hundred twenty-three thousand, four hundred seventy-six".