20894386 has 8 divisors (see below), whose sum is σ = 31361004. Its totient is φ = 10440720.

The previous prime is 20894383. The next prime is 20894389. The reversal of 20894386 is 68349802.

It is an interprime number because it is at equal distance from previous prime (20894383) and next prime (20894389).

It can be written as a sum of positive squares in 2 ways, for example, as 15062161 + 5832225 = 3881^2 + 2415^2 .

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 (20894383) 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, 4416 + ... + 7828.

Almost surely, 2^20894386 is an apocalyptic number.

20894386 is a deficient number, since it is larger than the sum of its proper divisors (10466618).

20894386 is a wasteful number, since it uses less digits than its factorization.

20894386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6476.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 20894386 is about 4571.0377377571. The cubic root of 20894386 is about 275.4291305552.

The spelling of 20894386 in words is "twenty million, eight hundred ninety-four thousand, three hundred eighty-six".