20883517 has 8 divisors (see below), whose sum is σ = 21926016. Its totient is φ = 19852272.

The previous prime is 20883493. The next prime is 20883521. The reversal of 20883517 is 71538802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20883517 - 2¹⁵ = 20850749 is a prime.

It is a super-2 number, since 2×20883517² = 872242564578578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20883217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1123 + ... + 6559.

It is an arithmetic number, because the mean of its divisors is an integer number (2740752).

Almost surely, 2^20883517 is an apocalyptic number.

It is an amenable number.

20883517 is a deficient number, since it is larger than the sum of its proper divisors (1042499).

20883517 is a wasteful number, since it uses less digits than its factorization.

20883517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5627.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 20883517 is about 4569.8486845846. The cubic root of 20883517 is about 275.3813640012.

The spelling of 20883517 in words is "twenty million, eight hundred eighty-three thousand, five hundred seventeen".