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258263012 = 2279223679
BaseRepresentation
bin11110110010011…
…00011111100100
3122222222010020202
433121030133210
51012103404022
641343250032
76254125250
oct1731143744
9588863222
10258263012
11122867907
12725a9918
1341676767
142642b260
1517a17592
hexf64c7e4

258263012 has 12 divisors (see below), whose sum is σ = 516526080. Its totient is φ = 110684136.

The previous prime is 258262993. The next prime is 258263017. The reversal of 258263012 is 210362852.

258263012 is an admirable number.

It is a super-4 number, since 4×2582630124 (a number of 35 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (258263017) 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, 4611812 + ... + 4611867.

It is an arithmetic number, because the mean of its divisors is an integer number (43043840).

Almost surely, 2258263012 is an apocalyptic number.

It is an amenable number.

258263012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

258263012 is a wasteful number, since it uses less digits than its factorization.

258263012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9223690 (or 9223688 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 258263012 is about 16070.5635246559. The cubic root of 258263012 is about 636.8259281348.

The spelling of 258263012 in words is "two hundred fifty-eight million, two hundred sixty-three thousand, twelve".

Divisors: 1 2 4 7 14 28 9223679 18447358 36894716 64565753 129131506 258263012