20099265 has 8 divisors (see below), whose sum is σ = 32158848. Its totient is φ = 10719600.

The previous prime is 20099231. The next prime is 20099267. The reversal of 20099265 is 56299002.

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

It is not a de Polignac number, because 20099265 - 2⁹ = 20098753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20099267) 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, 669961 + ... + 669990.

It is an arithmetic number, because the mean of its divisors is an integer number (4019856).

Almost surely, 2^20099265 is an apocalyptic number.

It is an amenable number.

20099265 is a deficient number, since it is larger than the sum of its proper divisors (12059583).

20099265 is a wasteful number, since it uses less digits than its factorization.

20099265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1339959.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 20099265 is about 4483.2203827160. The cubic root of 20099265 is about 271.8900985141.

It can be divided in two parts, 20099 and 265, that multiplied together give a palindrome (5326235).

The spelling of 20099265 in words is "twenty million, ninety-nine thousand, two hundred sixty-five".