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8130426220 = 2257577100649
BaseRepresentation
bin1111001001001110…
…00111010101101100
3202222121211110001001
413210213013111230
5113122342114340
63422435130044
7405323324350
oct74447072554
922877743031
108130426220
1134a2460614
1216aaa43924
139c757a8b7
14571b39460
15328bb029a
hex1e49c756c

8130426220 has 48 divisors (see below), whose sum is σ = 19547035200. Its totient is φ = 2782715904.

The previous prime is 8130426209. The next prime is 8130426223. The reversal of 8130426220 is 226240318.

It is a super-2 number, since 2×81304262202 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (8130426223) 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, 30456 + ... + 131104.

It is an arithmetic number, because the mean of its divisors is an integer number (407229900).

Almost surely, 28130426220 is an apocalyptic number.

It is an amenable number.

8130426220 is an abundant number, since it is smaller than the sum of its proper divisors (11416608980).

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

8130426220 is a wasteful number, since it uses less digits than its factorization.

8130426220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101242 (or 101240 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 8130426220 is about 90168.8761158749. The cubic root of 8130426220 is about 2010.8103149351.

Adding to 8130426220 its reverse (226240318), we get a palindrome (8356666538).

The spelling of 8130426220 in words is "eight billion, one hundred thirty million, four hundred twenty-six thousand, two hundred twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 577 1154 2308 2885 4039 5770 8078 11540 16156 20195 40390 80780 100649 201298 402596 503245 704543 1006490 1409086 2012980 2818172 3522715 7045430 14090860 58074473 116148946 232297892 290372365 406521311 580744730 813042622 1161489460 1626085244 2032606555 4065213110 8130426220