20543204 has 24 divisors (see below), whose sum is σ = 40486656. Its totient is φ = 9036000.

The previous prime is 20543197. The next prime is 20543221. The reversal of 20543204 is 40234502.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6167 + ... + 8894.

It is an arithmetic number, because the mean of its divisors is an integer number (1686944).

Almost surely, 2^20543204 is an apocalyptic number.

It is an amenable number.

20543204 is a deficient number, since it is larger than the sum of its proper divisors (19943452).

20543204 is a wasteful number, since it uses less digits than its factorization.

20543204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15107 (or 15105 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 20543204 is about 4532.4611415874. The cubic root of 20543204 is about 273.8773137850.

Adding to 20543204 its reverse (40234502), we get a palindrome (60777706).

The spelling of 20543204 in words is "twenty million, five hundred forty-three thousand, two hundred four".