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316803220 = 22540938729
BaseRepresentation
bin10010111000100…
…000100010010100
3211002010021022121
4102320200202110
51122100200340
651234105324
710564532356
oct2270404224
9732107277
10316803220
11152910a48
128a11b244
1350832136
14301090d6
151cc2c94a
hex12e20894

316803220 has 24 divisors (see below), whose sum is σ = 666930600. Its totient is φ = 126408192.

The previous prime is 316803203. The next prime is 316803239. The reversal of 316803220 is 22308613.

316803220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 22543504 + 294259716 = 4748^2 + 17154^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11185 + ... + 27544.

It is an arithmetic number, because the mean of its divisors is an integer number (27788775).

Almost surely, 2316803220 is an apocalyptic number.

It is an amenable number.

316803220 is an abundant number, since it is smaller than the sum of its proper divisors (350127380).

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

316803220 is a wasteful number, since it uses less digits than its factorization.

316803220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39147 (or 39145 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 316803220 is about 17798.9668239480. The cubic root of 316803220 is about 681.7050779768.

The spelling of 316803220 in words is "three hundred sixteen million, eight hundred three thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 409 818 1636 2045 4090 8180 38729 77458 154916 193645 387290 774580 15840161 31680322 63360644 79200805 158401610 316803220