20801912 has 8 divisors (see below), whose sum is σ = 39003600. Its totient is φ = 10400952.

The previous prime is 20801909. The next prime is 20801923. The reversal of 20801912 is 21910802.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1300112 + ... + 1300127.

It is an arithmetic number, because the mean of its divisors is an integer number (4875450).

Almost surely, 2^20801912 is an apocalyptic number.

It is an amenable number.

20801912 is a deficient number, since it is larger than the sum of its proper divisors (18201688).

20801912 is a wasteful number, since it uses less digits than its factorization.

20801912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2600245 (or 2600241 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 20801912 is about 4560.9113124462. The cubic root of 20801912 is about 275.0221998607.

The spelling of 20801912 in words is "twenty million, eight hundred one thousand, nine hundred twelve".