20694286 has 8 divisors (see below), whose sum is σ = 31063464. Its totient is φ = 10339800.

The previous prime is 20694283. The next prime is 20694337. The reversal of 20694286 is 68249602.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20694283) 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 3 ways as a sum of consecutive naturals, for example, 1081 + ... + 6523.

It is an arithmetic number, because the mean of its divisors is an integer number (3882933).

Almost surely, 2^20694286 is an apocalyptic number.

20694286 is a deficient number, since it is larger than the sum of its proper divisors (10369178).

20694286 is a wasteful number, since it uses less digits than its factorization.

20694286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7346.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 20694286 is about 4549.0972730862. The cubic root of 20694286 is about 274.5470715105.

The spelling of 20694286 in words is "twenty million, six hundred ninety-four thousand, two hundred eighty-six".