20683696 has 80 divisors (see below), whose sum is σ = 47996928. Its totient is φ = 8524800.

The previous prime is 20683681. The next prime is 20683709. The reversal of 20683696 is 69638602.

20683696 = T₅₃ + T₅₄ + ... + T₄₉₈.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92641 + ... + 92863.

Almost surely, 2^20683696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20683696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23998464).

20683696 is an abundant number, since it is smaller than the sum of its proper divisors (27313232).

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

20683696 is a wasteful number, since it uses less digits than its factorization.

20683696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290 (or 284 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 20683696 is about 4547.9331569406. The cubic root of 20683696 is about 274.5002316956.

The spelling of 20683696 in words is "twenty million, six hundred eighty-three thousand, six hundred ninety-six".