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258105270 = 2358603509
BaseRepresentation
bin11110110001001…
…01111110110110
3122222200002212110
433120211332312
51012033332040
641340031450
76252600333
oct1730457666
9588602773
10258105270
1112276a345
1272532586
134161ca17
14263c998a
15179d5980
hexf625fb6

258105270 has 16 divisors (see below), whose sum is σ = 619452720. Its totient is φ = 68828064.

The previous prime is 258105259. The next prime is 258105277. The reversal of 258105270 is 72501852.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 8603509 = 258105270 / (2 + 5 + 8 + 1 + 0 + 5 + 2 + 7 + 0).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258105277) 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, 4301725 + ... + 4301784.

It is an arithmetic number, because the mean of its divisors is an integer number (38715795).

Almost surely, 2258105270 is an apocalyptic number.

258105270 is an abundant number, since it is smaller than the sum of its proper divisors (361347450).

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

258105270 is a wasteful number, since it uses less digits than its factorization.

258105270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8603519.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 258105270 is about 16065.6549819794. The cubic root of 258105270 is about 636.6962481192.

The spelling of 258105270 in words is "two hundred fifty-eight million, one hundred five thousand, two hundred seventy".

Divisors: 1 2 3 5 6 10 15 30 8603509 17207018 25810527 43017545 51621054 86035090 129052635 258105270