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258352220 = 22571845373
BaseRepresentation
bin11110110011000…
…10010001011100
3200000010122121202
433121202101130
51012114232340
641345215032
76254646320
oct1731422134
9600118552
10258352220
11122918935
1272631478
13416a8249
1426451980
1517a33c15
hexf66245c

258352220 has 24 divisors (see below), whose sum is σ = 620045664. Its totient is φ = 88577856.

The previous prime is 258352207. The next prime is 258352273. The reversal of 258352220 is 22253852.

It is a happy number.

258352220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 922547 + ... + 922826.

It is an arithmetic number, because the mean of its divisors is an integer number (25835236).

Almost surely, 2258352220 is an apocalyptic number.

258352220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

258352220 is an abundant number, since it is smaller than the sum of its proper divisors (361693444).

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

258352220 is a wasteful number, since it uses less digits than its factorization.

258352220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1845389 (or 1845387 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 258352220 is about 16073.3387944136. The cubic root of 258352220 is about 636.8992428373.

The spelling of 258352220 in words is "two hundred fifty-eight million, three hundred fifty-two thousand, two hundred twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 1845373 3690746 7381492 9226865 12917611 18453730 25835222 36907460 51670444 64588055 129176110 258352220