20664096 has 48 divisors (see below), whose sum is σ = 57103200. Its totient is φ = 6524928.

The previous prime is 20664031. The next prime is 20664113. The reversal of 20664096 is 69046602.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3841 + ... + 7488.

It is an arithmetic number, because the mean of its divisors is an integer number (1189650).

Almost surely, 2^20664096 is an apocalyptic number.

It is an amenable number.

20664096 is an abundant number, since it is smaller than the sum of its proper divisors (36439104).

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

20664096 is a wasteful number, since it uses less digits than its factorization.

20664096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11361 (or 11353 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 20664096 is about 4545.7778212315. Note that the first 3 decimals coincide. The cubic root of 20664096 is about 274.4134982466.

The spelling of 20664096 in words is "twenty million, six hundred sixty-four thousand, ninety-six".