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252143016 = 23310505959
BaseRepresentation
bin11110000011101…
…10010110101000
3122120110012012020
433001312112220
51004022034031
641004144440
76151115556
oct1701662650
9576405166
10252143016
1111a367864
1270538120
1340312c68
14256b6bd6
1517209096
hexf0765a8

252143016 has 16 divisors (see below), whose sum is σ = 630357600. Its totient is φ = 84047664.

The previous prime is 252143011. The next prime is 252143029. The reversal of 252143016 is 610341252.

252143016 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2521430162 = 127152201035152512, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 10505959 = 252143016 / (2 + 5 + 2 + 1 + 4 + 3 + 0 + 1 + 6).

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (252143011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5252956 + ... + 5253003.

It is an arithmetic number, because the mean of its divisors is an integer number (39397350).

Almost surely, 2252143016 is an apocalyptic number.

It is an amenable number.

252143016 is an abundant number, since it is smaller than the sum of its proper divisors (378214584).

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

252143016 is a wasteful number, since it uses less digits than its factorization.

252143016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10505968 (or 10505964 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 252143016 is about 15879.0118080440. The cubic root of 252143016 is about 631.7554266504.

Adding to 252143016 its reverse (610341252), we get a palindrome (862484268).

The spelling of 252143016 in words is "two hundred fifty-two million, one hundred forty-three thousand, sixteen".

Divisors: 1 2 3 4 6 8 12 24 10505959 21011918 31517877 42023836 63035754 84047672 126071508 252143016