20261095 has 8 divisors (see below), whose sum is σ = 24369264. Its totient is φ = 16171584.

The previous prime is 20261081. The next prime is 20261099. The reversal of 20261095 is 59016202.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20261095 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20261099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2149 + ... + 6718.

It is an arithmetic number, because the mean of its divisors is an integer number (3046158).

Almost surely, 2^20261095 is an apocalyptic number.

20261095 is a deficient number, since it is larger than the sum of its proper divisors (4108169).

20261095 is an equidigital number, since it uses as much as digits as its factorization.

20261095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9329.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 20261095 is about 4501.2326089639. The cubic root of 20261095 is about 272.6178599669.

Adding to 20261095 its reverse (59016202), we get a palindrome (79277297).

The spelling of 20261095 in words is "twenty million, two hundred sixty-one thousand, ninety-five".