20117270 has 16 divisors (see below), whose sum is σ = 37190448. Its totient is φ = 7829280.

The previous prime is 20117261. The next prime is 20117287. The reversal of 20117270 is 7271102.

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, 26816 + ... + 27555.

It is an arithmetic number, because the mean of its divisors is an integer number (2324403).

Almost surely, 2^20117270 is an apocalyptic number.

20117270 is a deficient number, since it is larger than the sum of its proper divisors (17073178).

20117270 is a wasteful number, since it uses less digits than its factorization.

20117270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54415.

The product of its (nonzero) digits is 196, while the sum is 20.

The square root of 20117270 is about 4485.2279763686. The cubic root of 20117270 is about 271.9712610207.

Adding to 20117270 its reverse (7271102), we get a palindrome (27388372).

It can be divided in two parts, 201 and 17270, that added together give a palindrome (17471).

The spelling of 20117270 in words is "twenty million, one hundred seventeen thousand, two hundred seventy".