20846738 has 8 divisors (see below), whose sum is σ = 34112880. Its totient is φ = 9475780.

The previous prime is 20846731. The next prime is 20846753. The reversal of 20846738 is 83764802.

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 (20846731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473768 + ... + 473811.

It is an arithmetic number, because the mean of its divisors is an integer number (4264110).

Almost surely, 2^20846738 is an apocalyptic number.

20846738 is a deficient number, since it is larger than the sum of its proper divisors (13266142).

20846738 is a wasteful number, since it uses less digits than its factorization.

20846738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947592.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 20846738 is about 4565.8228174120. The cubic root of 20846738 is about 275.2196064007.

The spelling of 20846738 in words is "twenty million, eight hundred forty-six thousand, seven hundred thirty-eight".