Search a number
-
+
70111080 = 233251371211
BaseRepresentation
bin1000010110111…
…00111101101000
311212221000022200
410023130331220
5120422023310
610542420200
71510635324
oct413347550
9155830280
1070111080
1136637546
121b591660
13116aa260
149450984
15624d9c0
hex42dcf68

70111080 has 192 divisors, whose sum is σ = 250024320. Its totient is φ = 16934400.

The previous prime is 70111051. The next prime is 70111081. The reversal of 70111080 is 8011107.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (70111081) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 332175 + ... + 332385.

It is an arithmetic number, because the mean of its divisors is an integer number (1302210).

Almost surely, 270111080 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 70111080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125012160).

70111080 is an abundant number, since it is smaller than the sum of its proper divisors (179913240).

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

70111080 is a wasteful number, since it uses less digits than its factorization.

70111080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312 (or 305 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 18.

The square root of 70111080 is about 8373.2359336161. The cubic root of 70111080 is about 412.3464111399.

Adding to 70111080 its reverse (8011107), we get a palindrome (78122187).

It can be divided in two parts, 701 and 11080, that added together give a triangular number (11781 = T153).

The spelling of 70111080 in words is "seventy million, one hundred eleven thousand, eighty".