20912066 has 8 divisors (see below), whose sum is σ = 35849280. Its totient is φ = 8962308.

The previous prime is 20912053. The next prime is 20912069. The reversal of 20912066 is 66021902.

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

It is not an unprimeable number, because it can be changed into a prime (20912069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 746846 + ... + 746873.

It is an arithmetic number, because the mean of its divisors is an integer number (4481160).

Almost surely, 2^20912066 is an apocalyptic number.

20912066 is a deficient number, since it is larger than the sum of its proper divisors (14937214).

20912066 is a wasteful number, since it uses less digits than its factorization.

20912066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493728.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 20912066 is about 4572.9712441694. The cubic root of 20912066 is about 275.5067943863.

Adding to 20912066 its reverse (66021902), we get a palindrome (86933968).

The spelling of 20912066 in words is "twenty million, nine hundred twelve thousand, sixty-six".