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1282680290 = 25472729107
BaseRepresentation
bin100110001110100…
…0010010111100010
310022101120220120102
41030131002113202
510111331232130
6331140142402
743533413453
oct11435022742
93271526512
101282680290
115a9048761
122b9697a02
13175982828
14c24d312a
157791d645
hex4c7425e2

1282680290 has 16 divisors (see below), whose sum is σ = 2357949312. Its totient is φ = 502155504.

The previous prime is 1282680271. The next prime is 1282680293. The reversal of 1282680290 is 920862821.

It is not an unprimeable number, because it can be changed into a prime (1282680293) 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, 1364084 + ... + 1365023.

It is an arithmetic number, because the mean of its divisors is an integer number (147371832).

Almost surely, 21282680290 is an apocalyptic number.

1282680290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1282680290 is a deficient number, since it is larger than the sum of its proper divisors (1075269022).

1282680290 is a wasteful number, since it uses less digits than its factorization.

1282680290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2729161.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 1282680290 is about 35814.5262428529. The cubic root of 1282680290 is about 1086.5243751903.

The spelling of 1282680290 in words is "one billion, two hundred eighty-two million, six hundred eighty thousand, two hundred ninety".

Divisors: 1 2 5 10 47 94 235 470 2729107 5458214 13645535 27291070 128268029 256536058 641340145 1282680290