20356204 has 12 divisors (see below), whose sum is σ = 38861928. Its totient is φ = 9252800.

The previous prime is 20356183. The next prime is 20356211. The reversal of 20356204 is 40265302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

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 3 ways as a sum of consecutive naturals, for example, 231277 + ... + 231364.

It is an arithmetic number, because the mean of its divisors is an integer number (3238494).

Almost surely, 2^20356204 is an apocalyptic number.

It is an amenable number.

20356204 is a deficient number, since it is larger than the sum of its proper divisors (18505724).

20356204 is a wasteful number, since it uses less digits than its factorization.

20356204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462656 (or 462654 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 20356204 is about 4511.7850126086. The cubic root of 20356204 is about 273.0437656535.

The spelling of 20356204 in words is "twenty million, three hundred fifty-six thousand, two hundred four".