20095690 has 16 divisors (see below), whose sum is σ = 36241992. Its totient is φ = 8022784.

The previous prime is 20095687. The next prime is 20095697. The reversal of 20095690 is 9659002.

It can be written as a sum of positive squares in 4 ways, for example, as 14205361 + 5890329 = 3769^2 + 2427^2 .

It is a super-2 number, since 2×20095690² = 807673513152200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20095697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4542 + ... + 7798.

Almost surely, 2^20095690 is an apocalyptic number.

20095690 is a deficient number, since it is larger than the sum of its proper divisors (16146302).

20095690 is a wasteful number, since it uses less digits than its factorization.

20095690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3881.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 20095690 is about 4482.8216560555. The cubic root of 20095690 is about 271.8739774480.

The spelling of 20095690 in words is "twenty million, ninety-five thousand, six hundred ninety".