20017270 has 32 divisors (see below), whose sum is σ = 44347968. Its totient is φ = 6334848.

The previous prime is 20017247. The next prime is 20017301. The reversal of 20017270 is 7271002.

It is a congruent number.

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, 10089 + ... + 11908.

It is an arithmetic number, because the mean of its divisors is an integer number (1385874).

Almost surely, 2^20017270 is an apocalyptic number.

20017270 is an abundant number, since it is smaller than the sum of its proper divisors (24330698).

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

20017270 is a wasteful number, since it uses less digits than its factorization.

20017270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22024.

The product of its (nonzero) digits is 196, while the sum is 19.

The square root of 20017270 is about 4474.0663830569. The cubic root of 20017270 is about 271.5198691689.

Adding to 20017270 its reverse (7271002), we get a palindrome (27288272).

The spelling of 20017270 in words is "twenty million, seventeen thousand, two hundred seventy".