20017896 has 32 divisors (see below), whose sum is σ = 50155200. Its totient is φ = 6657920.

The previous prime is 20017871. The next prime is 20017903. The reversal of 20017896 is 69871002.

It is a congruent number.

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, 18901 + ... + 19931.

It is an arithmetic number, because the mean of its divisors is an integer number (1567350).

Almost surely, 2^20017896 is an apocalyptic number.

It is an amenable number.

20017896 is an abundant number, since it is smaller than the sum of its proper divisors (30137304).

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

20017896 is a wasteful number, since it uses less digits than its factorization.

20017896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1849 (or 1845 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 20017896 is about 4474.1363412395. The cubic root of 20017896 is about 271.5226995527.

Adding to 20017896 its reverse (69871002), we get a palindrome (89888898).

The spelling of 20017896 in words is "twenty million, seventeen thousand, eight hundred ninety-six".