20719012 has 12 divisors (see below), whose sum is σ = 36499456. Its totient is φ = 10290600.

The previous prime is 20718989. The next prime is 20719019. The reversal of 20719012 is 21091702.

It is a super-2 number, since 2×20719012² = 858554916512288, which contains 22 as substring.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20719019) by changing a digit.

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, 16548 + ... + 17755.

Almost surely, 2^20719012 is an apocalyptic number.

It is an amenable number.

20719012 is a deficient number, since it is larger than the sum of its proper divisors (15780444).

20719012 is a wasteful number, since it uses less digits than its factorization.

20719012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34458 (or 34456 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 20719012 is about 4551.8141438332. The cubic root of 20719012 is about 274.6563730027.

The spelling of 20719012 in words is "twenty million, seven hundred nineteen thousand, twelve".