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230782209749 = 71313729363179
BaseRepresentation
bin1101011011101110110…
…0010000111011010101
3211001200121102221220222
43112323230100323111
512240120221202444
6254004143404125
722446666262520
oct3267354207325
9731617387828
10230782209749
11899685a4a73
12388885b3645
13189bb778780
14b254383bb7
15600aaadeee
hex35bbb10ed5

230782209749 has 32 divisors (see below), whose sum is σ = 287093963520. Its totient is φ = 180642580992.

The previous prime is 230782209701. The next prime is 230782209761. The reversal of 230782209749 is 947902287032.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-230782209749 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 230782209749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230782229749) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3621242 + ... + 3684420.

It is an arithmetic number, because the mean of its divisors is an integer number (8971686360).

Almost surely, 2230782209749 is an apocalyptic number.

It is an amenable number.

230782209749 is a deficient number, since it is larger than the sum of its proper divisors (56311753771).

230782209749 is a wasteful number, since it uses less digits than its factorization.

230782209749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63629.

The product of its (nonzero) digits is 3048192, while the sum is 53.

The spelling of 230782209749 in words is "two hundred thirty billion, seven hundred eighty-two million, two hundred nine thousand, seven hundred forty-nine".

Divisors: 1 7 13 91 137 293 959 1781 2051 3809 12467 26663 40141 63179 280987 442253 521833 821327 3652831 5749289 8655523 18511447 60588661 112521799 129580129 240648811 787652593 1684541677 2536068239 17752477673 32968887107 230782209749