20099312 has 20 divisors (see below), whose sum is σ = 39152256. Its totient is φ = 9995520.

The previous prime is 20099311. The next prime is 20099341. The reversal of 20099312 is 21399002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20099311) 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, 233 + ... + 6344.

Almost surely, 2^20099312 is an apocalyptic number.

It is an amenable number.

20099312 is a deficient number, since it is larger than the sum of its proper divisors (19052944).

20099312 is a wasteful number, since it uses less digits than its factorization.

20099312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6776 (or 6770 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 20099312 is about 4483.2256244807. The cubic root of 20099312 is about 271.8903104427.

The spelling of 20099312 in words is "twenty million, ninety-nine thousand, three hundred twelve".