20545256 has 16 divisors (see below), whose sum is σ = 40197600. Its totient is φ = 9825904.

The previous prime is 20545247. The next prime is 20545267. The reversal of 20545256 is 65254502.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55646 + ... + 56013.

It is an arithmetic number, because the mean of its divisors is an integer number (2512350).

Almost surely, 2^20545256 is an apocalyptic number.

It is an amenable number.

20545256 is a deficient number, since it is larger than the sum of its proper divisors (19652344).

20545256 is a wasteful number, since it uses less digits than its factorization.

20545256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111688 (or 111684 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 20545256 is about 4532.6875030163. The cubic root of 20545256 is about 273.8864324136.

Adding to 20545256 its reverse (65254502), we get a palindrome (85799758).

The spelling of 20545256 in words is "twenty million, five hundred forty-five thousand, two hundred fifty-six".