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313884880 = 2456416121
BaseRepresentation
bin10010101101011…
…000000011010000
3210212122000002221
4102231120003100
51120323304010
651051350424
710530656161
oct2255300320
9725560087
10313884880
111511a83a1
1289152414
135004c9ca
142d989768
151c852dda
hex12b580d0

313884880 has 40 divisors (see below), whose sum is σ = 731040264. Its totient is φ = 125337600.

The previous prime is 313884877. The next prime is 313884881. The reversal of 313884880 is 88488313.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 34058896 + 279825984 = 5836^2 + 16728^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×3138848802 = 197047435785228800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313884881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48220 + ... + 54340.

Almost surely, 2313884880 is an apocalyptic number.

It is an amenable number.

313884880 is an abundant number, since it is smaller than the sum of its proper divisors (417155384).

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

313884880 is a wasteful number, since it uses less digits than its factorization.

313884880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6775 (or 6769 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 43.

The square root of 313884880 is about 17716.7965501667. The cubic root of 313884880 is about 679.6053650220.

The spelling of 313884880 in words is "three hundred thirteen million, eight hundred eighty-four thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 641 1282 2564 3205 5128 6121 6410 10256 12242 12820 24484 25640 30605 48968 51280 61210 97936 122420 244840 489680 3923561 7847122 15694244 19617805 31388488 39235610 62776976 78471220 156942440 313884880