20394396 has 48 divisors (see below), whose sum is σ = 57684480. Its totient is φ = 6179760.

The previous prime is 20394389. The next prime is 20394401. The reversal of 20394396 is 69349302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 20394396.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 7396 + ... + 9771.

It is an arithmetic number, because the mean of its divisors is an integer number (1201760).

Almost surely, 2^20394396 is an apocalyptic number.

It is an amenable number.

20394396 is an abundant number, since it is smaller than the sum of its proper divisors (37290084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20394396 is a wasteful number, since it uses less digits than its factorization.

20394396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17191 (or 17183 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

The square root of 20394396 is about 4516.0155004163. The cubic root of 20394396 is about 273.2144191574.

The spelling of 20394396 in words is "twenty million, three hundred ninety-four thousand, three hundred ninety-six".