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230697730 = 2561378193
BaseRepresentation
bin11011100000000…
…10101100000010
3121002002122210101
431300002230002
5433024311410
634520353014
75500620064
oct1560025402
9532078711
10230697730
1110924a68a
126531576a
1338a44a43
14228d3734
15153bed3a
hexdc02b02

230697730 has 16 divisors (see below), whose sum is σ = 422064504. Its totient is φ = 90766080.

The previous prime is 230697707. The next prime is 230697763. The reversal of 230697730 is 37796032.

230697730 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 44129449 + 186568281 = 6643^2 + 13659^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 230697730.

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, 188487 + ... + 189706.

Almost surely, 2230697730 is an apocalyptic number.

230697730 is a deficient number, since it is larger than the sum of its proper divisors (191366774).

230697730 is a wasteful number, since it uses less digits than its factorization.

230697730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378261.

The product of its (nonzero) digits is 47628, while the sum is 37.

The square root of 230697730 is about 15188.7369455133. The cubic root of 230697730 is about 613.3114985794.

The spelling of 230697730 in words is "two hundred thirty million, six hundred ninety-seven thousand, seven hundred thirty".

Divisors: 1 2 5 10 61 122 305 610 378193 756386 1890965 3781930 23069773 46139546 115348865 230697730