20090995 has 8 divisors (see below), whose sum is σ = 24179616. Its totient is φ = 16025856.

The previous prime is 20090977. The next prime is 20091023. The reversal of 20090995 is 59909002.

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

It is a cyclic number.

It is not a de Polignac number, because 20090995 - 2⁷ = 20090867 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20090995.

It is an unprimeable number.

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, 3927 + ... + 7456.

It is an arithmetic number, because the mean of its divisors is an integer number (3022452).

Almost surely, 2^20090995 is an apocalyptic number.

20090995 is a deficient number, since it is larger than the sum of its proper divisors (4088621).

20090995 is a wasteful number, since it uses less digits than its factorization.

20090995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11741.

The product of its (nonzero) digits is 7290, while the sum is 34.

The square root of 20090995 is about 4482.2979597523. The cubic root of 20090995 is about 271.8528029616.

Adding to 20090995 its reverse (59909002), we get a palindrome (79999997).

The spelling of 20090995 in words is "twenty million, ninety thousand, nine hundred ninety-five".