Search a number
-
+
70889672220 = 223519312697457
BaseRepresentation
bin100001000000101011…
…0101000111000011100
320202222102102110201120
41002001112220320130
52130140224002340
652322151410540
75056466162133
oct1020126507034
9222872373646
1070889672220
112807840aa74
12118a4983a50
1368b9866213
143606c4491a
151c9d79c4d0
hex10815a8e1c

70889672220 has 192 divisors, whose sum is σ = 216508723200. Its totient is φ = 17264517120.

The previous prime is 70889672213. The next prime is 70889672221. The reversal of 70889672220 is 2227698807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70889672221) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9502732 + ... + 9510188.

It is an arithmetic number, because the mean of its divisors is an integer number (1127649600).

Almost surely, 270889672220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70889672220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108254361600).

70889672220 is an abundant number, since it is smaller than the sum of its proper divisors (145619050980).

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

70889672220 is a wasteful number, since it uses less digits than its factorization.

70889672220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7788 (or 7786 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 51.

The spelling of 70889672220 in words is "seventy billion, eight hundred eighty-nine million, six hundred seventy-two thousand, two hundred twenty".