20911468 has 12 divisors (see below), whose sum is σ = 37285920. Its totient is φ = 10258352.

The previous prime is 20911463. The next prime is 20911469. The reversal of 20911468 is 86411902.

It is a happy number.

It is a zygodrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20911463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49108 + ... + 49531.

It is an arithmetic number, because the mean of its divisors is an integer number (3107160).

Almost surely, 2^20911468 is an apocalyptic number.

It is an amenable number.

20911468 is a deficient number, since it is larger than the sum of its proper divisors (16374452).

20911468 is a wasteful number, since it uses less digits than its factorization.

20911468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98696 (or 98694 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 20911468 is about 4572.9058595165. The cubic root of 20911468 is about 275.5041682368.

The spelling of 20911468 in words is "twenty million, nine hundred eleven thousand, four hundred sixty-eight".