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230140782 = 23227494651
BaseRepresentation
bin11011011011110…
…10101101101110
3121001001100210200
431231322231232
5432404001112
634500414330
75463110244
oct1555725556
9531040720
10230140782
111089aa1a3
12650a73a6
13388ab3a1
14227ca794
151530ecdc
hexdb7ab6e

230140782 has 24 divisors (see below), whose sum is σ = 498927000. Its totient is φ = 76669200.

The previous prime is 230140759. The next prime is 230140793. The reversal of 230140782 is 287041032.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47157 + ... + 51807.

It is an arithmetic number, because the mean of its divisors is an integer number (20788625).

Almost surely, 2230140782 is an apocalyptic number.

230140782 is an abundant number, since it is smaller than the sum of its proper divisors (268786218).

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

230140782 is a wasteful number, since it uses less digits than its factorization.

230140782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7408 (or 7405 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 230140782 is about 15170.3916231586. The cubic root of 230140782 is about 612.8175508446.

The spelling of 230140782 in words is "two hundred thirty million, one hundred forty thousand, seven hundred eighty-two".

Divisors: 1 2 3 6 9 18 2749 4651 5498 8247 9302 13953 16494 24741 27906 41859 49482 83718 12785599 25571198 38356797 76713594 115070391 230140782