20479708 has 12 divisors (see below), whose sum is σ = 36068872. Its totient is φ = 10174320.

The previous prime is 20479703. The next prime is 20479709. The reversal of 20479708 is 80797402.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20479703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15678 + ... + 16933.

Almost surely, 2^20479708 is an apocalyptic number.

It is an amenable number.

20479708 is a deficient number, since it is larger than the sum of its proper divisors (15589164).

20479708 is a wasteful number, since it uses less digits than its factorization.

20479708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32772 (or 32770 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 20479708 is about 4525.4511377320. The cubic root of 20479708 is about 273.5948511679.

The spelling of 20479708 in words is "twenty million, four hundred seventy-nine thousand, seven hundred eight".