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258062540 = 225105112277
BaseRepresentation
bin11110110000110…
…11100011001100
3122222120221020212
433120123203030
51012031000130
641335101552
76252331631
oct1730334314
9588527225
10258062540
1112274022a
12725118b8
1341606438
14263b8188
15179c7e95
hexf61b8cc

258062540 has 24 divisors (see below), whose sum is σ = 542491152. Its totient is φ = 103118400.

The previous prime is 258062537. The next prime is 258062549. The reversal of 258062540 is 45260852.

It is a junction number, because it is equal to n+sod(n) for n = 258062497 and 258062506.

It is not an unprimeable number, because it can be changed into a prime (258062549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14882 + ... + 27158.

It is an arithmetic number, because the mean of its divisors is an integer number (22603798).

Almost surely, 2258062540 is an apocalyptic number.

258062540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

258062540 is an abundant number, since it is smaller than the sum of its proper divisors (284428612).

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

258062540 is a wasteful number, since it uses less digits than its factorization.

258062540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13337 (or 13335 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 258062540 is about 16064.3250714121. The cubic root of 258062540 is about 636.6611106058.

The spelling of 258062540 in words is "two hundred fifty-eight million, sixty-two thousand, five hundred forty".

Divisors: 1 2 4 5 10 20 1051 2102 4204 5255 10510 12277 21020 24554 49108 61385 122770 245540 12903127 25806254 51612508 64515635 129031270 258062540