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230381120 = 265719941
BaseRepresentation
bin11011011101101…
…01011001000000
3121001111120111002
431232311121000
5432434143440
634505511132
75465131034
oct1556653100
9531446432
10230381120
11109053822
12651a24a8
13389638b8
14228501c4
151535b115
hexdbb5640

230381120 has 28 divisors (see below), whose sum is σ = 548595804. Its totient is φ = 92152320.

The previous prime is 230381117. The next prime is 230381131. The reversal of 230381120 is 21183032.

230381120 is digitally balanced in base 2, 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 2 ways, for example, as 169416256 + 60964864 = 13016^2 + 7808^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 230381092 and 230381101.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 359651 + ... + 360290.

Almost surely, 2230381120 is an apocalyptic number.

230381120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

230381120 is an abundant number, since it is smaller than the sum of its proper divisors (318214684).

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

230381120 is an equidigital number, since it uses as much as digits as its factorization.

230381120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719958 (or 719948 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 230381120 is about 15178.3108414606. The cubic root of 230381120 is about 613.0308001772.

The spelling of 230381120 in words is "two hundred thirty million, three hundred eighty-one thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 160 320 719941 1439882 2879764 3599705 5759528 7199410 11519056 14398820 23038112 28797640 46076224 57595280 115190560 230381120