20099361 has 8 divisors (see below), whose sum is σ = 27422560. Its totient is φ = 13087872.

The previous prime is 20099357. The next prime is 20099371. The reversal of 20099361 is 16399002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20099361 - 2² = 20099357 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20099311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77776 + ... + 78033.

It is an arithmetic number, because the mean of its divisors is an integer number (3427820).

Almost surely, 2^20099361 is an apocalyptic number.

It is an amenable number.

20099361 is a deficient number, since it is larger than the sum of its proper divisors (7323199).

20099361 is a wasteful number, since it uses less digits than its factorization.

20099361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155855.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 20099361 is about 4483.2310892926. The cubic root of 20099361 is about 271.8905313891.

The spelling of 20099361 in words is "twenty million, ninety-nine thousand, three hundred sixty-one".