20719204 has 12 divisors (see below), whose sum is σ = 39554928. Its totient is φ = 9417800.

The previous prime is 20719169. The next prime is 20719211. The reversal of 20719204 is 40291702.

It is a super-4 number, since 4×20719204⁴ (a number of 30 digits) contains 4444 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235402 + ... + 235489.

It is an arithmetic number, because the mean of its divisors is an integer number (3296244).

Almost surely, 2^20719204 is an apocalyptic number.

It is an amenable number.

20719204 is a deficient number, since it is larger than the sum of its proper divisors (18835724).

20719204 is a wasteful number, since it uses less digits than its factorization.

20719204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470906 (or 470904 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 20719204 is about 4551.8352342764. The cubic root of 20719204 is about 274.6572213999.

The spelling of 20719204 in words is "twenty million, seven hundred nineteen thousand, two hundred four".