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258393380 = 22575233529
BaseRepresentation
bin11110110011011…
…00010100100100
3200000012202002012
433121230110210
51012122042010
641350133352
76255210320
oct1731542444
9600182065
10258393380
11122946853
1272651258
13416c0bbb
1426462980
1517a41005
hexf66c524

258393380 has 48 divisors (see below), whose sum is σ = 621505920. Its totient is φ = 88397568.

The previous prime is 258393313. The next prime is 258393389. The reversal of 258393380 is 83393852.

258393380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (258393389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71456 + ... + 74984.

It is an arithmetic number, because the mean of its divisors is an integer number (12948040).

Almost surely, 2258393380 is an apocalyptic number.

258393380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

258393380 is an abundant number, since it is smaller than the sum of its proper divisors (363112540).

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

258393380 is a wasteful number, since it uses less digits than its factorization.

258393380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4068 (or 4066 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 258393380 is about 16074.6191245703. The cubic root of 258393380 is about 636.9330640818.

The spelling of 258393380 in words is "two hundred fifty-eight million, three hundred ninety-three thousand, three hundred eighty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 523 1046 2092 2615 3529 3661 5230 7058 7322 10460 14116 14644 17645 18305 24703 35290 36610 49406 70580 73220 98812 123515 247030 494060 1845667 3691334 7382668 9228335 12919669 18456670 25839338 36913340 51678676 64598345 129196690 258393380