20468811 has 16 divisors (see below), whose sum is σ = 30280320. Its totient is φ = 12193920.

The previous prime is 20468801. The next prime is 20468831. The reversal of 20468811 is 11886402.

It is not a de Polignac number, because 20468811 - 2¹⁰ = 20467787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20468801) 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 15 ways as a sum of consecutive naturals, for example, 3310 + ... + 7203.

It is an arithmetic number, because the mean of its divisors is an integer number (1892520).

Almost surely, 2^20468811 is an apocalyptic number.

20468811 is a deficient number, since it is larger than the sum of its proper divisors (9811509).

20468811 is a wasteful number, since it uses less digits than its factorization.

20468811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10586.

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 20468811 is about 4524.2470091718. The cubic root of 20468811 is about 273.5463170769.

The spelling of 20468811 in words is "twenty million, four hundred sixty-eight thousand, eight hundred eleven".