20830095 has 96 divisors (see below), whose sum is σ = 44271360. Its totient is φ = 9210240.

The previous prime is 20830067. The next prime is 20830133. The reversal of 20830095 is 59003802.

It is a Cunningham number, because it is equal to 4564²-1.

It is not a de Polignac number, because 20830095 - 2⁸ = 20829839 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 250924 + ... + 251006.

It is an arithmetic number, because the mean of its divisors is an integer number (461160).

Almost surely, 2^20830095 is an apocalyptic number.

20830095 is an abundant number, since it is smaller than the sum of its proper divisors (23441265).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20830095 is a wasteful number, since it uses less digits than its factorization.

20830095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 20830095 is about 4563.9998904470. Note that the first 3 decimals coincide. The cubic root of 20830095 is about 275.1463463477.

Adding to 20830095 its reverse (59003802), we get a palindrome (79833897).

It can be divided in two parts, 208 and 30095, that added together give a palindrome (30303).

The spelling of 20830095 in words is "twenty million, eight hundred thirty thousand, ninety-five".