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315230292 = 223513219101
BaseRepresentation
bin10010110010100…
…000100001010100
3210222011100200000
4102302200201110
51121144332132
651140251300
710545261516
oct2262404124
9728140600
10315230292
11151a37203
12896a0b30
1350401200
142dc19bb6
151ca1b87c
hex12ca0854

315230292 has 216 divisors, whose sum is σ = 951219360. Its totient is φ = 90979200.

The previous prime is 315230281. The next prime is 315230297. The reversal of 315230292 is 292032513.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315230297) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3121042 + ... + 3121142.

Almost surely, 2315230292 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 315230292, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (475609680).

315230292 is an abundant number, since it is smaller than the sum of its proper divisors (635989068).

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

315230292 is a wasteful number, since it uses less digits than its factorization.

315230292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 315230292 is about 17754.7259060792. The cubic root of 315230292 is about 680.5749836888.

The spelling of 315230292 in words is "three hundred fifteen million, two hundred thirty thousand, two hundred ninety-two".