20894611 has 4 divisors (see below), whose sum is σ = 20907072. Its totient is φ = 20882152.

The previous prime is 20894609. The next prime is 20894617. The reversal of 20894611 is 11649802.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20894611 - 2¹ = 20894609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20894617) 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, 3235 + ... + 7228.

It is an arithmetic number, because the mean of its divisors is an integer number (5226768).

Almost surely, 2^20894611 is an apocalyptic number.

20894611 is a deficient number, since it is larger than the sum of its proper divisors (12461).

20894611 is a wasteful number, since it uses less digits than its factorization.

20894611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12460.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 20894611 is about 4571.0623491700. The cubic root of 20894611 is about 275.4301191993.

The spelling of 20894611 in words is "twenty million, eight hundred ninety-four thousand, six hundred eleven".