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30842106685 = 5134346723629
BaseRepresentation
bin11100101110010101…
…010011001100111101
32221121102212100120121
4130232111103030331
51001131034403220
622100233214541
72141203403245
oct345625231475
987542770517
1030842106685
1112097624275
125b88b61451
132ba699b690
1416c8214b25
15c07a1beaa
hex72e55333d

30842106685 has 32 divisors (see below), whose sum is σ = 40873472640. Its totient is φ = 22197466368.

The previous prime is 30842106683. The next prime is 30842106697. The reversal of 30842106685 is 58660124803.

It is a cyclic number.

It is not a de Polignac number, because 30842106685 - 21 = 30842106683 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30842106683) 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, 1293451 + ... + 1317079.

It is an arithmetic number, because the mean of its divisors is an integer number (1277296020).

Almost surely, 230842106685 is an apocalyptic number.

It is an amenable number.

30842106685 is a deficient number, since it is larger than the sum of its proper divisors (10031365955).

30842106685 is a wasteful number, since it uses less digits than its factorization.

30842106685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24157.

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 30842106685 in words is "thirty billion, eight hundred forty-two million, one hundred six thousand, six hundred eighty-five".

Divisors: 1 5 13 43 65 215 467 559 2335 2795 6071 20081 23629 30355 100405 118145 261053 307177 1016047 1305265 1535885 5080235 11034743 13208611 55173715 66043055 143451659 474493949 717258295 2372469745 6168421337 30842106685