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312536680 = 2357813417
BaseRepresentation
bin10010101000001…
…110111001101000
3210210002111201121
4102220032321220
51120002133210
651002425024
710513342441
oct2250167150
9723074647
10312536680
11150467485
1288802174
134c99a161
142d7182c8
151c6886da
hex12a0ee68

312536680 has 16 divisors (see below), whose sum is σ = 703207620. Its totient is φ = 125014656.

The previous prime is 312536677. The next prime is 312536717. The reversal of 312536680 is 86635213.

It can be written as a sum of positive squares in 2 ways, for example, as 251603044 + 60933636 = 15862^2 + 7806^2 .

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 3 ways as a sum of consecutive naturals, for example, 3906669 + ... + 3906748.

Almost surely, 2312536680 is an apocalyptic number.

It is an amenable number.

312536680 is an abundant number, since it is smaller than the sum of its proper divisors (390670940).

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

312536680 is a wasteful number, since it uses less digits than its factorization.

312536680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7813428 (or 7813424 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 312536680 is about 17678.7069662914. The cubic root of 312536680 is about 678.6309537335.

The spelling of 312536680 in words is "three hundred twelve million, five hundred thirty-six thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 7813417 15626834 31253668 39067085 62507336 78134170 156268340 312536680