20396284 has 6 divisors (see below), whose sum is σ = 35693504. Its totient is φ = 10198140.

The previous prime is 20396281. The next prime is 20396297. The reversal of 20396284 is 48269302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20396281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2549532 + ... + 2549539.

Almost surely, 2^20396284 is an apocalyptic number.

It is an amenable number.

20396284 is a deficient number, since it is larger than the sum of its proper divisors (15297220).

20396284 is a wasteful number, since it uses less digits than its factorization.

20396284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5099075 (or 5099073 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 20396284 is about 4516.2245294051. The cubic root of 20396284 is about 273.2228497888. Note that the first 3 decimals are identical.

The spelling of 20396284 in words is "twenty million, three hundred ninety-six thousand, two hundred eighty-four".