Search a number
-
+
7103949820 = 2251132290681
BaseRepresentation
bin1101001110110110…
…11010101111111100
3200100002100001010121
412213123122233330
5104022102343240
63132530144324
7341020401652
oct64733325774
920302301117
107103949820
113015aa3710
1214631220a4
13892a00506
144b5698dd2
152b89ee04a
hex1a76dabfc

7103949820 has 24 divisors (see below), whose sum is σ = 16274503728. Its totient is φ = 2583254400.

The previous prime is 7103949761. The next prime is 7103949821. The reversal of 7103949820 is 289493017.

It is a super-2 number, since 2×71039498202 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7103949821) 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, 16145121 + ... + 16145560.

It is an arithmetic number, because the mean of its divisors is an integer number (678104322).

Almost surely, 27103949820 is an apocalyptic number.

It is an amenable number.

7103949820 is an abundant number, since it is smaller than the sum of its proper divisors (9170553908).

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

7103949820 is a wasteful number, since it uses less digits than its factorization.

7103949820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32290701 (or 32290699 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 7103949820 is about 84284.9323426198. The cubic root of 7103949820 is about 1922.3536871982.

The spelling of 7103949820 in words is "seven billion, one hundred three million, nine hundred forty-nine thousand, eight hundred twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 32290681 64581362 129162724 161453405 322906810 355197491 645813620 710394982 1420789964 1775987455 3551974910 7103949820