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312255504 = 243211217921
BaseRepresentation
bin10010100111001…
…010010000010000
3210202120020000200
4102213022100100
51114414134004
650552415200
710511061621
oct2247122020
9722506020
10312255504
11150295200
12886a7500
134c8cc192
142d683a48
151c630239
hex129ca410

312255504 has 90 divisors (see below), whose sum is σ = 960601278. Its totient is φ = 94617600.

The previous prime is 312255491. The next prime is 312255509. The reversal of 312255504 is 405552213.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 174240000 + 138015504 = 13200^2 + 11748^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (312255509) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8464 + ... + 26384.

Almost surely, 2312255504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 312255504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (480300639).

312255504 is an abundant number, since it is smaller than the sum of its proper divisors (648345774).

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

312255504 is a wasteful number, since it uses less digits than its factorization.

312255504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17957 (or 17937 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 312255504 is about 17670.7527853230. The cubic root of 312255504 is about 678.4273808406.

The spelling of 312255504 in words is "three hundred twelve million, two hundred fifty-five thousand, five hundred four".

Divisors: 1 2 3 4 6 8 9 11 12 16 18 22 24 33 36 44 48 66 72 88 99 121 132 144 176 198 242 264 363 396 484 528 726 792 968 1089 1452 1584 1936 2178 2904 4356 5808 8712 17424 17921 35842 53763 71684 107526 143368 161289 197131 215052 286736 322578 394262 430104 591393 645156 788524 860208 1182786 1290312 1577048 1774179 2168441 2365572 2580624 3154096 3548358 4336882 4731144 6505323 7096716 8673764 9462288 13010646 14193432 17347528 19515969 26021292 28386864 34695056 39031938 52042584 78063876 104085168 156127752 312255504