220171950 has 72 divisors (see below), whose sum is σ = 593222448. Its totient is φ = 58544640.

The previous prime is 220171949. The next prime is 220171967. The reversal of 220171950 is 59171022.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 302487 + ... + 303213.

Almost surely, 2^220171950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220171950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296611224).

220171950 is an abundant number, since it is smaller than the sum of its proper divisors (373050498).

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

220171950 is a wasteful number, since it uses less digits than its factorization.

220171950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418 (or 1410 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 220171950 is about 14838.1922753414. The cubic root of 220171950 is about 603.8383099351.

The spelling of 220171950 in words is "two hundred twenty million, one hundred seventy-one thousand, nine hundred fifty".