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1315226680 = 235157209431
BaseRepresentation
bin100111001100100…
…1100010000111000
310101122211102211021
41032121030100320
510143144223210
6334301512224
744410146055
oct11631142070
93348742737
101315226680
116154582a9
12308572674
1317c639851
14c696602c
157a6ebbda
hex4e64c438

1315226680 has 32 divisors (see below), whose sum is σ = 2978123040. Its totient is φ = 522737280.

The previous prime is 1315226657. The next prime is 1315226699. The reversal of 1315226680 is 866225131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98436 + ... + 110995.

It is an arithmetic number, because the mean of its divisors is an integer number (93066345).

Almost surely, 21315226680 is an apocalyptic number.

1315226680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1315226680 is an abundant number, since it is smaller than the sum of its proper divisors (1662896360).

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

1315226680 is a wasteful number, since it uses less digits than its factorization.

1315226680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209599 (or 209595 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 1315226680 is about 36266.0541002188. The cubic root of 1315226680 is about 1095.6374540117.

The spelling of 1315226680 in words is "one billion, three hundred fifteen million, two hundred twenty-six thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 157 314 628 785 1256 1570 3140 6280 209431 418862 837724 1047155 1675448 2094310 4188620 8377240 32880667 65761334 131522668 164403335 263045336 328806670 657613340 1315226680