Search a number
-
+
70105623380 = 22513683339461
BaseRepresentation
bin100000101001010011…
…1101110101101010100
320200221210002122220122
41001102213232231110
52122034014422010
652112302451112
75031165652352
oct1012247565524
9220853078818
1070105623380
1127805884521
1211706293a98
1367c32a98b0
143570a6c7d2
151c54a26855
hex10529eeb54

70105623380 has 48 divisors (see below), whose sum is σ = 158573785104. Its totient is φ = 25880709120.

The previous prime is 70105623377. The next prime is 70105623389. The reversal of 70105623380 is 8332650107.

It can be written as a sum of positive squares in 8 ways, for example, as 20961827524 + 49143795856 = 144782^2 + 221684^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 70105623380.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70105623389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1756850 + ... + 1796310.

It is an arithmetic number, because the mean of its divisors is an integer number (3303620523).

Almost surely, 270105623380 is an apocalyptic number.

It is an amenable number.

70105623380 is an abundant number, since it is smaller than the sum of its proper divisors (88468161724).

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

70105623380 is a wasteful number, since it uses less digits than its factorization.

70105623380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46316 (or 46314 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The spelling of 70105623380 in words is "seventy billion, one hundred five million, six hundred twenty-three thousand, three hundred eighty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 6833 13666 27332 34165 39461 68330 78922 88829 136660 157844 177658 197305 355316 394610 444145 512993 789220 888290 1025986 1776580 2051972 2564965 5129930 10259860 269637013 539274026 1078548052 1348185065 2696370130 3505281169 5392740260 7010562338 14021124676 17526405845 35052811690 70105623380