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258648052 = 221361731117
BaseRepresentation
bin11110110101010…
…10011111110100
3200000200200102111
433122222133310
51012203214202
641355420404
76260320645
oct1732523764
9600620374
10258648052
11123000123
1272754704
134177cab0
14264cb6cc
1517a916d7
hexf6aa7f4

258648052 has 48 divisors (see below), whose sum is σ = 502679632. Its totient is φ = 115706880.

The previous prime is 258648043. The next prime is 258648067. The reversal of 258648052 is 250846852.

It can be written as a sum of positive squares in 8 ways, for example, as 120209296 + 138438756 = 10964^2 + 11766^2 .

It is a junction number, because it is equal to n+sod(n) for n = 258647996 and 258648014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230998 + ... + 232114.

Almost surely, 2258648052 is an apocalyptic number.

It is an amenable number.

258648052 is a deficient number, since it is larger than the sum of its proper divisors (244031580).

258648052 is a wasteful number, since it uses less digits than its factorization.

258648052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268 (or 1266 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 40.

The square root of 258648052 is about 16082.5387299394. The cubic root of 258648052 is about 637.1422486921.

The spelling of 258648052 in words is "two hundred fifty-eight million, six hundred forty-eight thousand, fifty-two".

Divisors: 1 2 4 13 26 52 61 73 122 146 244 292 793 949 1117 1586 1898 2234 3172 3796 4453 4468 8906 14521 17812 29042 57889 58084 68137 81541 115778 136274 163082 231556 272548 326164 885781 1060033 1771562 2120066 3543124 4240132 4974001 9948002 19896004 64662013 129324026 258648052