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258672020 = 22547275183
BaseRepresentation
bin11110110101100…
…00010110010100
3200000201220022012
433122300112110
51012210001040
641400123352
76260450555
oct1732602624
9600656265
10258672020
11123017132
1272766558
134178a989
14264d632c
1517a98865
hexf6b0594

258672020 has 24 divisors (see below), whose sum is σ = 554770944. Its totient is φ = 101266976.

The previous prime is 258672019. The next prime is 258672031. The reversal of 258672020 is 20276852.

258672020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2586720202 = 133822427861760800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136652 + ... + 138531.

It is an arithmetic number, because the mean of its divisors is an integer number (23115456).

Almost surely, 2258672020 is an apocalyptic number.

258672020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

258672020 is an abundant number, since it is smaller than the sum of its proper divisors (296098924).

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

258672020 is a wasteful number, since it uses less digits than its factorization.

258672020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275239 (or 275237 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 258672020 is about 16083.2838686631. The cubic root of 258672020 is about 637.1619286570.

The spelling of 258672020 in words is "two hundred fifty-eight million, six hundred seventy-two thousand, twenty".

Divisors: 1 2 4 5 10 20 47 94 188 235 470 940 275183 550366 1100732 1375915 2751830 5503660 12933601 25867202 51734404 64668005 129336010 258672020