20541768 has 32 divisors (see below), whose sum is σ = 55305600. Its totient is φ = 6320448.

The previous prime is 20541767. The next prime is 20541769. The reversal of 20541768 is 86714502.

It is an interprime number because it is at equal distance from previous prime (20541767) and next prime (20541769).

It is not an unprimeable number, because it can be changed into a prime (20541767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32608 + ... + 33231.

It is an arithmetic number, because the mean of its divisors is an integer number (1728300).

Almost surely, 2^20541768 is an apocalyptic number.

It is an amenable number.

20541768 is an abundant number, since it is smaller than the sum of its proper divisors (34763832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20541768 is a wasteful number, since it uses less digits than its factorization.

20541768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65861 (or 65857 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 20541768 is about 4532.3027259882. The cubic root of 20541768 is about 273.8709321614.

The spelling of 20541768 in words is "twenty million, five hundred forty-one thousand, seven hundred sixty-eight".