20479628 has 24 divisors (see below), whose sum is σ = 40868352. Its totient is φ = 8895744.

The previous prime is 20479621. The next prime is 20479631. The reversal of 20479628 is 82697402.

It is a junction number, because it is equal to n+sod(n) for n = 20479591 and 20479600.

It is not an unprimeable number, because it can be changed into a prime (20479621) 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 7 ways as a sum of consecutive naturals, for example, 10700 + ... + 12467.

It is an arithmetic number, because the mean of its divisors is an integer number (1702848).

Almost surely, 2^20479628 is an apocalyptic number.

It is an amenable number.

20479628 is a deficient number, since it is larger than the sum of its proper divisors (20388724).

20479628 is a wasteful number, since it uses less digits than its factorization.

20479628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23201 (or 23199 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 20479628 is about 4525.4422988256. The cubic root of 20479628 is about 273.5944949190.

The spelling of 20479628 in words is "twenty million, four hundred seventy-nine thousand, six hundred twenty-eight".