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238227860 = 22513916261
BaseRepresentation
bin11100011001100…
…01000110010100
3121121021020012002
432030301012110
5441441242420
635350014432
75621621603
oct1614610624
9547236162
10238227860
11112523132
1267947418
133a480340
14238d3a3a
1515dab075
hexe331194

238227860 has 24 divisors (see below), whose sum is σ = 538762056. Its totient is φ = 87960960.

The previous prime is 238227827. The next prime is 238227877. The reversal of 238227860 is 68722832.

238227860 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3341584 + 234886276 = 1828^2 + 15326^2 .

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

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, 457871 + ... + 458390.

It is an arithmetic number, because the mean of its divisors is an integer number (22448419).

Almost surely, 2238227860 is an apocalyptic number.

238227860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238227860 is an abundant number, since it is smaller than the sum of its proper divisors (300534196).

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

238227860 is a wasteful number, since it uses less digits than its factorization.

238227860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916283 (or 916281 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 238227860 is about 15434.6318388227. The cubic root of 238227860 is about 619.9131512064.

The spelling of 238227860 in words is "two hundred thirty-eight million, two hundred twenty-seven thousand, eight hundred sixty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 916261 1832522 3665044 4581305 9162610 11911393 18325220 23822786 47645572 59556965 119113930 238227860