20947195 has 8 divisors (see below), whose sum is σ = 25671744. Its totient is φ = 16401024.

The previous prime is 20947189. The next prime is 20947211. The reversal of 20947195 is 59174902.

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 20947195 - 2²¹ = 18850043 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44334 + ... + 44803.

It is an arithmetic number, because the mean of its divisors is an integer number (3208968).

Almost surely, 2^20947195 is an apocalyptic number.

20947195 is a deficient number, since it is larger than the sum of its proper divisors (4724549).

20947195 is an equidigital number, since it uses as much as digits as its factorization.

20947195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89189.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 20947195 is about 4576.8105706922. The cubic root of 20947195 is about 275.6609775247.

The spelling of 20947195 in words is "twenty million, nine hundred forty-seven thousand, one hundred ninety-five".