20479066 has 4 divisors (see below), whose sum is σ = 30718602. Its totient is φ = 10239532.

The previous prime is 20479061. The next prime is 20479087. The reversal of 20479066 is 66097402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20295025 + 184041 = 4505^2 + 429^2 .

It is not an unprimeable number, because it can be changed into a prime (20479061) 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 as a sum of consecutive naturals, namely, 5119765 + ... + 5119768.

Almost surely, 2^20479066 is an apocalyptic number.

20479066 is a deficient number, since it is larger than the sum of its proper divisors (10239536).

20479066 is a wasteful number, since it uses less digits than its factorization.

20479066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10239535.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 20479066 is about 4525.3802050215. The cubic root of 20479066 is about 273.5919922448.

The spelling of 20479066 in words is "twenty million, four hundred seventy-nine thousand, sixty-six".