20095866 has 24 divisors (see below), whose sum is σ = 49761504. Its totient is φ = 5741640.

The previous prime is 20095861. The next prime is 20095871. The reversal of 20095866 is 66859002.

It is an interprime number because it is at equal distance from previous prime (20095861) and next prime (20095871).

It is a self number, because there is not a number n which added to its sum of digits gives 20095866.

It is not an unprimeable number, because it can be changed into a prime (20095861) 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 11 ways as a sum of consecutive naturals, for example, 79620 + ... + 79871.

It is an arithmetic number, because the mean of its divisors is an integer number (2073396).

Almost surely, 2^20095866 is an apocalyptic number.

20095866 is an abundant number, since it is smaller than the sum of its proper divisors (29665638).

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

20095866 is a wasteful number, since it uses less digits than its factorization.

20095866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159506 (or 159503 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 20095866 is about 4482.8412865057. The cubic root of 20095866 is about 271.8747711453.

It can be divided in two parts, 2009 and 5866, that added together give a triangular number (7875 = T₁₂₅).

The spelling of 20095866 in words is "twenty million, ninety-five thousand, eight hundred sixty-six".