20709095 has 8 divisors (see below), whose sum is σ = 27110160. Its totient is φ = 15061120.

The previous prime is 20709089. The next prime is 20709121. The reversal of 20709095 is 59090702.

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

It is not a de Polignac number, because 20709095 - 2⁴ = 20709079 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188210 + ... + 188319.

It is an arithmetic number, because the mean of its divisors is an integer number (3388770).

Almost surely, 2^20709095 is an apocalyptic number.

20709095 is a deficient number, since it is larger than the sum of its proper divisors (6401065).

20709095 is a wasteful number, since it uses less digits than its factorization.

20709095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376545.

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 20709095 is about 4550.7246675667. The cubic root of 20709095 is about 274.6125452703.

Adding to 20709095 its reverse (59090702), we get a palindrome (79799797).

The spelling of 20709095 in words is "twenty million, seven hundred nine thousand, ninety-five".