20940995 has 8 divisors (see below), whose sum is σ = 25541520. Its totient is φ = 16477920.

The previous prime is 20940979. The next prime is 20941007. The reversal of 20940995 is 59904902.

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

It is not a de Polignac number, because 20940995 - 2⁴ = 20940979 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 34025 + ... + 34634.

It is an arithmetic number, because the mean of its divisors is an integer number (3192690).

Almost surely, 2^20940995 is an apocalyptic number.

20940995 is a deficient number, since it is larger than the sum of its proper divisors (4600525).

20940995 is an equidigital number, since it uses as much as digits as its factorization.

20940995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68725.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 20940995 is about 4576.1331929917. The cubic root of 20940995 is about 275.6337779130.

The spelling of 20940995 in words is "twenty million, nine hundred forty thousand, nine hundred ninety-five".