20883717 has 16 divisors (see below), whose sum is σ = 32568000. Its totient is φ = 13189392.

The previous prime is 20883697. The next prime is 20883743. The reversal of 20883717 is 71738802.

It is not a de Polignac number, because 20883717 - 2⁸ = 20883461 is a prime.

It is a super-2 number, since 2×20883717² = 872259271472178, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20883757) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19842 + ... + 20867.

It is an arithmetic number, because the mean of its divisors is an integer number (2035500).

Almost surely, 2^20883717 is an apocalyptic number.

20883717 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

20883717 is a deficient number, since it is larger than the sum of its proper divisors (11684283).

20883717 is a wasteful number, since it uses less digits than its factorization.

20883717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40737 (or 40731 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 20883717 is about 4569.8705670949. The cubic root of 20883717 is about 275.3822431012.

The spelling of 20883717 in words is "twenty million, eight hundred eighty-three thousand, seven hundred seventeen".