20209354 has 16 divisors (see below), whose sum is σ = 33286176. Its totient is φ = 9126000.

The previous prime is 20209339. The next prime is 20209367. The reversal of 20209354 is 45390202.

It is a happy 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 7 ways as a sum of consecutive naturals, for example, 529 + ... + 6379.

It is an arithmetic number, because the mean of its divisors is an integer number (2080386).

Almost surely, 2^20209354 is an apocalyptic number.

20209354 is a deficient number, since it is larger than the sum of its proper divisors (13076822).

20209354 is a wasteful number, since it uses less digits than its factorization.

20209354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6021.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 20209354 is about 4495.4815092490. The cubic root of 20209354 is about 272.3855996522.

Adding to 20209354 its reverse (45390202), we get a palindrome (65599556).

The spelling of 20209354 in words is "twenty million, two hundred nine thousand, three hundred fifty-four".