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220160987 = 2112234679
BaseRepresentation
bin11010001111101…
…10001111011011
3120100021100002122
431013312033123
5422330122422
633502451455
75312223524
oct1507661733
9510240078
10220160987
11103303232
1261893b8b
13367c5a97
142134d84b
15144dcd42
hexd1f63db

220160987 has 8 divisors (see below), whose sum is σ = 222243840. Its totient is φ = 218088360.

The previous prime is 220160981. The next prime is 220161013. The reversal of 220160987 is 789061022.

It is a happy number.

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 220160987 - 212 = 220156891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220160981) 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, 44714 + ... + 49392.

It is an arithmetic number, because the mean of its divisors is an integer number (27780480).

Almost surely, 2220160987 is an apocalyptic number.

220160987 is a deficient number, since it is larger than the sum of its proper divisors (2082853).

220160987 is a wasteful number, since it uses less digits than its factorization.

220160987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5113.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 220160987 is about 14837.8228524268. The cubic root of 220160987 is about 603.8282874818.

Adding to 220160987 its sum of digits (35), we get a palindrome (220161022).

The spelling of 220160987 in words is "two hundred twenty million, one hundred sixty thousand, nine hundred eighty-seven".