20790895 has 8 divisors (see below), whose sum is σ = 25557840. Its totient is φ = 16226880.

The previous prime is 20790877. The next prime is 20790899. The reversal of 20790895 is 59809702.

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

It is not a de Polignac number, because 20790895 - 2⁹ = 20790383 is a prime.

It is a super-2 number, since 2×20790895² = 864522629802050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20790899) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 50505 + ... + 50914.

It is an arithmetic number, because the mean of its divisors is an integer number (3194730).

Almost surely, 2^20790895 is an apocalyptic number.

20790895 is a deficient number, since it is larger than the sum of its proper divisors (4766945).

20790895 is a wasteful number, since it uses less digits than its factorization.

20790895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101465.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 20790895 is about 4559.7033894761. The cubic root of 20790895 is about 274.9736393465.

The spelling of 20790895 in words is "twenty million, seven hundred ninety thousand, eight hundred ninety-five".