20354396 has 24 divisors (see below), whose sum is σ = 37860480. Its totient is φ = 9547632.

The previous prime is 20354393. The next prime is 20354413. The reversal of 20354396 is 69345302.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20354393) 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 7 ways as a sum of consecutive naturals, for example, 6881 + ... + 9383.

It is an arithmetic number, because the mean of its divisors is an integer number (1577520).

Almost surely, 2^20354396 is an apocalyptic number.

It is an amenable number.

20354396 is a deficient number, since it is larger than the sum of its proper divisors (17506084).

20354396 is a wasteful number, since it uses less digits than its factorization.

20354396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2633 (or 2631 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 20354396 is about 4511.5846440026. The cubic root of 20354396 is about 273.0356816685.

Adding to 20354396 its reverse (69345302), we get a palindrome (89699698).

The spelling of 20354396 in words is "twenty million, three hundred fifty-four thousand, three hundred ninety-six".