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230777493 = 310726719
BaseRepresentation
bin11011100000101…
…10001010010101
3121002020201012120
431300112022111
5433034334433
634522210153
75501401452
oct1560261225
9532221176
10230777493
111092a4601
1265353959
1338a7213b
1422914829
15153d87b3
hexdc16295

230777493 has 12 divisors (see below), whose sum is σ = 310652160. Its totient is φ = 152391112.

The previous prime is 230777483. The next prime is 230777501. The reversal of 230777493 is 394777032.

It is not a de Polignac number, because 230777493 - 25 = 230777461 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230777483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30988 + ... + 37706.

It is an arithmetic number, because the mean of its divisors is an integer number (25887680).

Almost surely, 2230777493 is an apocalyptic number.

It is an amenable number.

230777493 is a deficient number, since it is larger than the sum of its proper divisors (79874667).

230777493 is an equidigital number, since it uses as much as digits as its factorization.

230777493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6936 (or 6829 counting only the distinct ones).

The product of its (nonzero) digits is 222264, while the sum is 42.

The square root of 230777493 is about 15191.3624471276. The cubic root of 230777493 is about 613.3821739291.

It can be divided in two parts, 2307 and 77493, that added together give a triangular number (79800 = T399).

The spelling of 230777493 in words is "two hundred thirty million, seven hundred seventy-seven thousand, four hundred ninety-three".

Divisors: 1 3 107 321 6719 11449 20157 34347 718933 2156799 76925831 230777493