20894746 has 16 divisors (see below), whose sum is σ = 31842720. Its totient is φ = 10282000.

The previous prime is 20894729. The next prime is 20894747. The reversal of 20894746 is 64749802.

It is a junction number, because it is equal to n+sod(n) for n = 20894699 and 20894708.

It is not an unprimeable number, because it can be changed into a prime (20894747) by changing a digit.

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, 53520 + ... + 53908.

It is an arithmetic number, because the mean of its divisors is an integer number (1990170).

Almost surely, 2^20894746 is an apocalyptic number.

20894746 is a deficient number, since it is larger than the sum of its proper divisors (10947974).

20894746 is a wasteful number, since it uses less digits than its factorization.

20894746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 20894746 is about 4571.0771159542. The cubic root of 20894746 is about 275.4307123823.

The spelling of 20894746 in words is "twenty million, eight hundred ninety-four thousand, seven hundred forty-six".