20423468 has 12 divisors (see below), whose sum is σ = 38490480. Its totient is φ = 9426192.

The previous prime is 20423449. The next prime is 20423479. The reversal of 20423468 is 86432402.

It is a self number, because there is not a number n which added to its sum of digits gives 20423468.

It is an unprimeable number.

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, 196328 + ... + 196431.

It is an arithmetic number, because the mean of its divisors is an integer number (3207540).

Almost surely, 2^20423468 is an apocalyptic number.

It is an amenable number.

20423468 is a deficient number, since it is larger than the sum of its proper divisors (18067012).

20423468 is a wasteful number, since it uses less digits than its factorization.

20423468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392776 (or 392774 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 20423468 is about 4519.2331207850. The cubic root of 20423468 is about 273.3441789602.

The spelling of 20423468 in words is "twenty million, four hundred twenty-three thousand, four hundred sixty-eight".