20213995 has 8 divisors (see below), whose sum is σ = 24773184. Its totient is φ = 15826944.

The previous prime is 20213983. The next prime is 20214001. The reversal of 20213995 is 59931202.

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 20213995 - 2¹⁹ = 19689707 is a prime.

It is a Duffinian number.

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, 42774 + ... + 43243.

It is an arithmetic number, because the mean of its divisors is an integer number (3096648).

Almost surely, 2^20213995 is an apocalyptic number.

20213995 is a deficient number, since it is larger than the sum of its proper divisors (4559189).

20213995 is an equidigital number, since it uses as much as digits as its factorization.

20213995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86069.

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

The square root of 20213995 is about 4495.9976645901. The cubic root of 20213995 is about 272.4064488228.

The spelling of 20213995 in words is "twenty million, two hundred thirteen thousand, nine hundred ninety-five".